The question of the need to flush the engine is one of the most acute, relevant and often discussed by motorists. The main purpose of flushing is to clean the engine of various deposits that should not be in it. Accordingly, washing the motor is not only possible, but also necessary. How to flush the engine when changing the oil?

Is it necessary to flush the engine and when to do it?

Carrying out flushing only because it was advised in second-rate car services is impractical and pointless at best, and at worst it can cause serious engine damage. This procedure is relevant to carry out in the following cases:

1. The car previously belonged to another owner, and the new one has no idea which one motor oil used. In this case, washing is carried out necessarily, but very carefully and delicately. In most cases, they resort to flushing the engine with new oil.
2. The car owner is changing the lubricant, for example, switching from synthetics to mineral water. Flushing the engine in this case is desirable, but not necessary.
3. Absolutely new car, its owner takes care of the condition of components and assemblies. In this case, flushing procedures are carried out regularly.
4. Turbocharged engine or heavily used car.
5. An old car with deposits under the valve covers and in the pan. The diagnostics carried out will indicate the need for a thorough flushing, and the procedure in this case is carried out with the removal of the cover and pan.

In the first situation, when new owner the car does not know which oil was used before, flushing is required and is associated with the presence of additives in the lubricant. Such additives are not found in cheap and low-quality compounds, respectively, they do not protect the engine from the formation of deposits.

If engine oil is changed when switching from synthetic to mineral water or vice versa, then flushing oil is first poured. In this way, old additives are disposed of: it is likely that they will completely leave the system and will not react with new ones.

Regular flushing of the engine of a new car helps to avoid deposits on parts. If the machine is actively used and difficult conditions, then it is advised to flush the engine even for cars.

Experts do not advise flushing the engine in only two cases:

• if the car is under warranty (since it does not provide for such procedures, in case of violation, the car can be removed from service);
• if high-quality synthetics or semi-synthetics are poured into the engine.

The difference in flushing gasoline and diesel engines

Diesel engines differ from gasoline counterparts not only in their design, but also in the features of the flushing process and the materials used for this purpose. For their washing, only special means are used: the usual "five-minute" and "long-playing" washes and other compounds used for cleaning gasoline engines, in this case, they will not only not fit, but will also cause irreparable harm.

The oil pump delivers an insufficient amount of oil for the full functioning of the diesel engine. This leads to the need to create a so-called oil wedge, when the rubbing parts of the engine go into a "floating" state. The use of detergent additives, "five minutes" and ordinary oil when flushing can lead to increased friction between parts. The addition of such solutions dilutes the engine oil, due to which it loses all its properties. Deposits that build up on engine walls can vary in composition, so each requires a specific composition to dissolve.

Therefore, when flushing a diesel engine, experts advise car owners to go to a specialized store and purchase compounds designed for power units of this type. In all other respects, the process of cleaning the motor is no different from that carried out with a gasoline engine.

How to flush the motor: oil compounds, cleaners and other chemicals

Today, when changing the oil or when carrying out complex repairs, they resort to four main methods of flushing the engine:

1. Washing oil. A special tool that is poured into the engine after draining the old used oil. With such a composition, the car is operated in a gentle mode for several days. This option is not the most popular, since it requires additional investments and time: for three to four days, you need to visit a service station almost daily, pay for the work of specialists, and at the same time observe a gentle driving regime.
2. Washing liquid. The procedure is almost the same as the flushing oil method, but takes less time, since the composition of such an agent is more aggressive and caustic. Liquid is poured into the engine directly into the old oil, after which the engine runs for 10-15 minutes for idling. Then the used oil, together with all the impurities and waste contaminants, is replaced with a new one.
3. Regular engine oil change. The most gentle way to flush the engine. First, the oil filter and the lubricant itself are replaced, after which the car runs in for 2 thousand kilometers. Then the oil and filter are changed again and the subsequent driving in a gentle mode for 4 thousand kilometers. As soon as this distance is passed, the filter and oil are changed again. After that, you can operate the car in normal mode with regular maintenance.
4. Dismantling and flushing the engine. The whole procedure is done manually: the mechanics remove and disassemble the engine, after which all parts are washed with gasoline or kerosene. At the same time, diagnostics of the state of the power unit are carried out. This method is considered the most time-consuming and expensive, but it fully justifies itself in cases where it is necessary to carry out overhaul engine.

The easiest and least expensive way to keep your car engine running is to change the oil and oil filter regularly.

Flushing oil Liqui Moly

Liqui Moly- one of the most common and popular means for flushing the engine, presented in a wide range.

Oilsystem Spulung

Oilsystem Spulung is a cleaner that can be used to clean the engine and oil system.

The most effective result is achieved when used in vehicles that are operated:

• in conditions of aggressive and hard driving;
• in regular traffic jams;
• in case of untimely replacement of engine oil.

Separately, it is worth noting that this type of Liqui Moly cleaner can be used for both gasoline and diesel power units. Regular use of the composition allows you to extend the life of the motor and keep its parts and components clean. The manufacturer guarantees the following benefits:

1. The composition gently dissolves deposits and contaminants that have eaten into the walls of the engine without clogging oil filters and pipes.
2. Extends the life of filled engine oil.
3. Additives added to the flushing oil not only clean the engine, but also form a protective film on its walls that reduces the friction of parts.
4. The composition includes additional additives that protect rubber parts from wear and corrosion.
5. Completely exits the system after flushing is complete.

Oilsystem Spulung High Performance

Available in two versions: for petrol and diesel engines.

• motor overheating;
• power reduction;
• loss of compression;
• untimely replacement of engine oil;
• use of low-quality gasoline or diesel fuel.

The benefits of flushing oil include:

1. Quick cleaning of the entire system.
2. Neutrality with respect to various materials, including aluminum and rubber, often used in the internal combustion engine system.
3. The oil has an absolutely harmless composition that does not react with other substances.
4. The oil does not pollute the environment.

Oil-Schlamm-Spulug

Flushing liquid Liqui Moly, designed to clean the engine internal combustion from sludge, the causes of the formation of which are:

• rare replacement of lubricant;
• frequent and prolonged overheating of the motor;
• ingress of moisture or condensate into the system;
• the use of low-quality oils and fuels.

The manufacturer guarantees that the use of such additives can reduce noise in the engine and eliminate the knocks of hydraulic lifters.

It is most effective and expedient to use such a washing liquid in cars whose mileage has exceeded 100 thousand kilometers. The advantages of the composition include:

1. Elimination of soot and black deposits on the pipes of the oil system.
2. Elimination of deposits accumulating on engine pistons, especially on ring parts.
3. Cleaning of valves and openings of the oil system.
4. Cleaning the engine walls from lacquer deposits.
5. Prevention of oil starvation and costly repairs in the future.

Cleaning fluid from Liqui Moly, which includes additives that quickly and effectively eliminate contaminants located in the most inaccessible places in the oil system. At the same time, the liquid helps to remove carbon deposits accumulated in the piston group. Often Pro-Line Motorspulung is used to clean a manual transmission.

Flushing liquid Pro-Line Motorspulung with special additives for the removal of hard-to-reach dirt

The advantages of flushing liquid:

1. Reducing the amount of deposits that cannot be completely eliminated from the internal combustion engine.
2. Extending the life of new engine oil.
3. Safe cleaning of the engine thanks to the additives included in the fluid.

HI Gear Flushing Fluid

HI Gear is an American-made flushing composition, which contains special additives that do not harm the engine even with regular use for one year. Effectively removes most of the deposits from candles, valves and from the combustion chamber.

Adding liquid to the fuel increases engine power and reduces toxicity exhaust gases. Since the composition of the product does not include aggressive substances, its frequent use does not harm the motor.

Flushing liquid BBF

BBF - domestic flushing agent fuel system effectively removes tar deposits and prevents clogging of fuel filters.

It also helps to remove carbon deposits from the valves and combustion chamber. It has an anti-corrosion effect, eliminates fuel detonation, reduces fuel consumption and exhaust toxicity.

Runway Quality Rinse Additive

Runway is a special composition that cleans the engine oil system from spats, soot and other contaminants.

Improves heat dissipation and oil circulation, restores the mobility of compression and oil scraper rings. Does not harm gaskets, oil seals and valve stem seals.

Washes - "five minutes"

Washes - "five minutes" are highly concentrated formulations sold either in small containers or in bulk canisters (already diluted with conventional motor oil). The use of such products, on the one hand, reassures the car owner, because it is impossible to cause much damage to the engine in 5–10 minutes, and on the other hand, it makes one wonder: what can be washed in such a short time?

Some manufacturers refer to such flushes as full-fledged means for decoking the engine.

The composition of the "five minutes" includes special additives that form a protective film on the seals, protecting the rubber from destruction. At the same time, a rather high concentration of aggressive chemicals removes deposits from metal parts.

Danger of "five-minute" washes

Such flushing agents turned out to be so good that they ruined more than a dozen engines. The diagnosis of all power units was oil starvation, which led to damage to the oil pumps, as well as defects in camshafts, crankshaft knocks and piston wedges. After such a motor, it is almost impossible to restore - only if a major overhaul is carried out.

The reason for this is low-quality motor oils, which leave deposits in the engine system in the form of paraffin deposits and clots. Expensive lubricants do not sin like this, taking all the precipitation with them when changing, but untimely replacement of low-quality materials can lead to the formation of a mass that is more reminiscent of plasticine in consistency.

Such a mass can accumulate in the oil pan for years without causing much harm to the entire system, however, when using “five-minute” flushes, it begins to erode, the resulting paraffin clots clog all the filters of the fuel and oil systems, the oil receiver, which leads to disastrous consequences for the engine.

Solar oil is a gentle and safe remedy

Flushing the engine with diesel fuel is a common old-fashioned way to clean the power unit from deposits and dirt. Despite the fact that today most car owners are trying to use special auto chemicals, many advise using diesel fuel: this method of washing the engine is the most gentle and safe.

Advantages of the method:

• diesel fuel cleans the engine of slag and pollution;
• extends the life of the engine and the car as a whole;
• protects against the appearance of new deposits;
• creates a favorable environment for the further use of engine oil.

Many car owners do not classify diesel fuel as flushing materials, considering it to be fuel. Despite this, it is a very effective engine cleaner that can even be used to service older ICEs.

How to properly clean the engine with diesel fuel - video

Acetone is a popular car engine cleaner.

The use of acetone is an equally common and used method for flushing an engine.

The addition of such a composition to the engine increases the octane number of gasoline, cleans metal parts from soot and deposits, and removes moisture from the fuel. However, experts and car owners with many years of experience in operating a car do not advise pouring a large amount of acetone in order to avoid engine breakdowns.

Kerosene

Flushing the engine with kerosene is a very controversial method: many car owners are of the opinion that it can lead to scuffing. Add kerosene to the old oil in a small amount and leave the engine to run for Idling A couple of minutes. After draining the kerosene, it is advisable to completely fill the system with oil and leave the engine to idle again.

The disadvantage of this method is that kerosene, due to its fluidity, can get into intake manifold. The subsequent start of the engine with kerosene in the manifold can lead to serious damage.

Kerosene washes away all contaminants and slag formations in the fuel and oil systems, but it does not dissolve them, which is why all the dirt remains in the oil, in a suspended state. Accordingly, after starting the engine, this suspension will go through the system and can clog the filters and oil receiver.

transformer oil

Cleaning with transformer oil is the oldest method of washing engines, which was mainly used on GAZ-51 cars.

Today, some car owners resort to it, claiming that the composition washes away all engine deposits in a few minutes and prevents the appearance of new ones. However, experts do not recommend using transformer oil, arguing that it can damage the internal combustion engine.

Solvent

The engine can be washed with a solvent both in service conditions and independently. To carry out the procedure with your own hands, you need to purchase the tool itself and additional tools - fuel filter, hoses and fuel pump.

When flushing in this way, it should be remembered that the cleaning compound can adversely affect engine oil, despite the fact that manufacturers say that the properties of the lubricant are preserved even after solvent enters it. For this reason, such flushing is carried out only before changing the oil. In addition, the solvent can lead to the failure of spark plugs, so after using it, the entire kit is changed.

Petrol

Another way to flush the engine, which, despite its effectiveness, is often perceived with hostility by car owners. In this case, several liters of gasoline are poured into the engine and left for 10-30 minutes, then the fuel is drained and a new portion is poured. The procedure is repeated until the drained gasoline is clean.

Under no circumstances should the engine be started during such flushing!

The remaining gasoline in the system evaporates without mixing with the new oil and without causing any harm to the internal combustion engine. Experts do not advise using this method, and if you resort to it, then only if you switch to another type of engine oil.

Engine flush process

Flushing the engine is a sensitive procedure, during which you can seriously damage the power unit and the oil and fuel systems. Before proceeding with it, it is necessary to consult with a specialist in a car service and carry out diagnostics vehicle. Such a check allows you to assess the condition of the car and the need to change the engine oil.

Engine flushing is carried out as follows:

1. The engine warms up, after which the used engine oil is drained. To do this, it is advisable to drive the car onto a flyover or raise it on a lift with an inclination to one side - this will drain all the grease from the system.
2. changing oil filter and put in new oil. The car is operated in a break-in mode for two days.
3. Two days later, the oil filter and lubricating fluid are changed again.
4. After repeated break-in, you can drain the engine oil and proceed to direct flushing.
5. The flushing liquid is poured, the engine starts and idles for 10-15 minutes.
6. The flushing agent is completely drained from the system.
7. Then low-quality engine oil is poured in, the engine starts again and runs for half an hour at idle. This is done in order to completely remove flush residues from the system.
8. The used oil is drained, and high-quality lubricant is poured into the system, which will be constantly used in the future.

It is pointless to flush the engine without changing the oil filters: all the carbon deposits and dirt that will be washed off will accumulate in the filter, and when new engine oil is filled in, they will again enter the system. Therefore, after carrying out this procedure, it is advised to change all filters in the system.

Engine flush - video

Gentle flush - a gentle way to flush the engine

The most preferred option for cleaning the engine from accumulated deposits and soot. With a gentle method, special flushing agents are poured into the engine, and then the car travels 100-150 kilometers. During this time, the flushing will have time to gently and carefully clean the engine without causing any harm to it.

After the desired effect is achieved, the old oil is drained, the oil filter is changed and new grease is poured. The result of such a procedure will be obvious: the engine will start to run softer, the car will become more dynamic and obedient.

Fast engine flush

It is carried out in cases where engine cleaning and oil change must be carried out immediately, however, it is not the most preferable and safe option. They resort to it when there is metal shavings in the engine oil, when it is heavily contaminated, or in other situations when it is impossible to carry out a gentle flush.

The disadvantage of fast flushing is the negative effect it has on engine parts. In its effect, it is very similar to the result of using acid: it not only destroys carbon deposits and dirt, but also removes a thin layer from parts. Such regular exposure, of course, will not lead to anything good, therefore, quick flushing is resorted to in the most extreme cases.

Do-it-yourself engine decarbonization

Car engine decarbonization is a method of cleaning the system from carbon deposits formed as a result of operation. In car services it is called capital ICE repair and, accordingly, take round sums for it. However, you can do the decarbonization with your own hands: the main thing is to know what exactly and how to do it.

There are several ways to deal with deposits, the most effective of which are:

• cleaning with water or steam;
• cleaning using special compounds - for example, "Lavra";
• cleaning with a mixture of kerosene and acetone.

Such procedures can be carried out with your own hands, without resorting to the help of specialists.

Myths about engine decarbonization

For all the time of its existence, this procedure has acquired a huge number of prejudices and myths, the most common of which are:

1. Using a cleaning agent will give the pistons a shine. This is far from the case: of course, it is possible to achieve mirror purity, but no one will guarantee that the car will then start.
2. You can decarbonize without changing the engine oil. One of the most dangerous misconceptions: after cleaning the engine, the oil must be changed without fail, otherwise such a procedure is fraught with breakdown of the internal combustion engine.
3. It is impossible to carry out decarbonization on your own. The whole procedure can be carried out in an hour and a half without much effort on the part of the car owner.

Method for cleaning engine parts with water

The following materials are needed to decoke the engine with water:

• dropper;
• tee;
• hose;
• distilled water.

The dropper is connected to a bottle of distilled water, after which the resulting system is connected by a hose to the BDZ. The liquid from the bottle should only flow when the suction is on, and the dripping frequency should be about three drops per second.

After installing an impromptu dropper, the engine is idling, after which the bottle is attached under the hood and the car is driven for several kilometers. In most cases, the car is very sluggish at first, but then accelerates significantly.

The first effect should appear after 100-150 kilometers with a dropper. To achieve a complete cleaning of the engine, it is necessary to drive with a bottle of water at least 500 kilometers. A side effect of this decoking is a reduction in fuel consumption.

Is it possible to decoke the engine with water - video

Cleaning the engine with Laurel before changing the oil

Laurel - special liquid for decoking. You can get it at any automotive store for a bargain price.

Decarbonization with this tool is carried out only before changing the oil and consists of the following steps:

1. All spark plugs are removed.
2. The valves are set to one position. You can use a piece of thick wire for more accurate measurements.
3. About 45 ml of Lavra is poured into each cylinder.
4. The candles are back. Inside, it is desirable to create conditions similar to a steam bath.
5. The fluid stays in the engine for 4-6 hours.
6. After the specified time, the candles are unscrewed and the starter is started. It is advisable to carry out three or four starts lasting 10–15 seconds with the accelerator pedal fully depressed. This removes excess liquid.
7. All parts return to their place, the engine starts.
8. The used oil is drained from the system, everything is thoroughly washed and new oil is poured in, air and oil filters are installed.

To evaluate the change in compression, it is enough to drive about one to two kilometers. If everything remains the same, then the problem lies in the engine seals. And if the compression increased, then the decarbonization was carried out successfully.

We decoke the engine with Laurels - video

Decarbonizing with a mixture of acetone and kerosene

A similar composition is used to decoke the engine in the most extreme cases, when the car's mileage is more than 400 thousand kilometers and the thrust is completely gone.

Acetone and kerosene are mixed in a ratio of 2:1. For a 4-cylinder engine, 300 ml of mixture will be enough.

Before decoking, it is advisable to warm up the motor and cool it down a bit - it should be warm, but not hot, otherwise the acetone will start to boil.

Decoking is carried out very simply:

1. Candles are unscrewed, the prepared mixture is poured into their holes.
2. Then the candles are returned to their place, and in this form the engine is left for 10-12 hours.
3. After the specified time, the mixture of kerosene and acetone is blown out of the motor by starting the starter.

Before proceeding with the distillation of the mixture from the engine, several conditions must be met:

1. Any devices and wires that can spark when starting the starter are turned off.
2. The engine is lined with rags - they will protect other components and parts from dirt.
3. A test drive at high speeds is being carried out.

After the decarbonization, the engine oil must be changed, and it is advisable to do this several times. New filters are also installed.

Engine decarbonization with kerosene and acetone - video

Risk of decarbonization

Cleaning the engine from soot allows not only to eliminate all impurities, slag and dirt, but also washes away a thin oil film on the cylinder walls. The first start-up of the engine after decoking occurs almost “dry”, which can lead to rapid wear piston rings and to the so-called bullies. The use of special compounds will help to avoid this - the same Lavra, which creates a thin protective film on the cylinder walls, which reduces the re-formation of soot and prevents scuffing.

The nuance of the decarbonization is the location of the cylinders. It is easiest to carry it out on conventional in-line internal combustion engines, but in the case of opposed or V-shaped valves, the procedure becomes more complicated: access to spark plugs in such engines is more difficult, and the piston must be almost completely covered with liquid.

The biggest and most unpleasant disadvantage of this procedure is its duration. Of course, you can resort to a quick engine flush, but it is not always safe for combustion chambers and cylinders and often cannot completely remove all deposits.

In general, flushing a car engine is a very effective procedure. However, it is only useful when it is really needed. In other situations, flushing “for prevention” and “for the beauty of the engine” can lead to not the most pleasant consequences.

The need to flush the engine from old oil and contaminants arises for various reasons: for prevention purposes, when switching from one type of oil to another, in emergency situations when I had to mix the oils different types and manufacturers, after a significant excess of the recommended service replacement interval, etc. Also, a slight overheating of the engine or its frequent operation in maximum load modes can serve as a reason for flushing.

The fact is that under conditions of strong heating and harsh operation, engine oil can lose its useful properties prematurely, as a result of which it is recommended to additionally clean it before the next scheduled replacement. Next, we will consider the best way to flush the engine before changing the oil, and also answer the question of how to use engine flush oil.

Read in this article

How to flush the engine when changing the oil: diesel fuel, “five-minute”, flushing or regular oil

Today, there are several practical ways to flush the motor before changing the lubricant. Each of them has both its advantages and certain disadvantages. Some drivers wash the engine with the so-called "five-minute", others use flushing oil, others fill in regular oil and simply reduce the replacement interval by up to two times.

There are also many motorists who never use flushing before changing the oil, and there are those who pour regular oil into the engine. Now let's talk about popular flushing methods in more detail.

Diesel engine flush

Let's start with how to flush the engine with diesel fuel before changing the oil. Note that this method was actively used by motorists 10-15 years ago, and drivers often practiced washing with diesel fuel on models domestic production(VAZ, GAZ, ZAZ, etc.) with self replacement engine oil.

The advantages include that such cleaning is a cheap and easy option. In terms of efficiency and feasibility, even many owners domestic cars have long been skeptical about such washing, and the owners of more technically complex and “capricious” foreign cars completely bypassed such a procedure. Let's figure it out.

It is well known that diesel fuel dissolves and washes various contaminants well, and also has a certain ability to lubricate. For this reason, the use of such flushing seems to be quite justified, since in theory it allows you to wash the channels of the engine lubrication system, remove dirt and deposits from the surfaces of parts.

In parallel with this, it should be borne in mind that diesel fuel:

• is not a special flushing agent, as a result of which the effectiveness of this method is called into question.
• partial removal of contaminants after washing the engine with diesel fuel cannot be considered sufficient to clean the engine.

Please note that even the use of special equipment does not always provide a positive effect. Given this statement, much more benefit from diesel fuel should not be expected. But it can cause harm, since diesel fuel contains a lot of impurities that additionally pollute. Also, the use of diesel fuel leads to swelling of oil seals, gaskets and seals, resulting in oil leaks.

Another disadvantage is that diesel fuel can soften, but is not able to dissolve deposits inside the engine. The result is that after the diesel fuel enters the sump and softens the deposits accumulated there, the latter clog the oil receiver filter mesh. The consequences for the engine are obvious: oil starvation, increased wear or a quick failure of the unit.

It becomes quite obvious that although diesel fuel can be used to clean the parts of a disassembled engine with high quality, it is highly discouraged to pour it into the lubrication system before changing the oil. If you are still inclined towards this method, then the whole process of washing the engine with diesel fuel is as follows.

1. It is necessary to prepare 5-10 liters of high-quality diesel fuel and, in some cases, about 5-7 liters of cheap engine oil (depending on the degree of contamination of the internal combustion engine). Next, you need to decide whether you will only fill the engine with diesel fuel or additionally dilute it with oil. The fact is that some drivers dilute the lubricant with diesel fuel in proportions of 50/50, since they consider such a mixture to be more the best option. In parallel with this, you need to purchase at least 2 oil filters. One of them may be the simplest and most affordable, since after washing it will be replaced, that is, its further work is not planned.
2. The next step is to warm up the engine to operating temperature, after which the plug in the pan is unscrewed and the used oil is drained, the old oil filter can also be removed. Next, a new oil filter is installed, into which a little fresh oil is poured. We do not screw the cork in the pallet.
3. Now, through the oil filler neck, you can pour a couple of liters of clean diesel fuel or a mixture of oil with diesel fuel into the engine, which will flow out through drainer in the tray.
4. Then drain plug can be tightened, then add diesel fuel or mixtures of oil with diesel fuel to the “max” mark on the dipstick. Next, the motor is started for 10-15 seconds. During operation, you can slightly press the gas and increase the speed. An increase in speed leads to an increase in pressure in the lubrication system and better cleaning of channels and parts.
5. Then the engine must be turned off, and then let the power plant cool down a bit (about 2 minutes). After that, the drain plug is unscrewed, the flushing liquid is removed, a new portion is poured. The procedure is repeated several times, increasing the duration in time. Please note that during flushing at each stage, the motor must not be allowed to heat up above 50 degrees Celsius. When the temperature reaches the specified mark, the unit should be turned off immediately, giving it time to cool down.
6. The completion of the procedure is the drain from the flushing system, after which the drain plug is not screwed in, since it is necessary to refill the diesel fuel into the engine and rinse the pan again.
7. When all the residues drain, you can tighten the drain plug and fill in the previously prepared cheap engine oil. After that, you can let the engine run for about 15-20 minutes before reaching operating temperatures, and some drivers drive 2-3 kilometers at low and medium speeds (2500-3000 rpm). The remains of diesel fuel and exfoliated contaminants are washed off the surfaces and mixed with the poured oil.
8. Next, the indicated oil must be completely drained, and the oil filter removed. Now you can fill in normal oil and install a high-quality oil filter, that is, make a scheduled oil change in the engine.

In the process of carrying out this cleaning procedure, you should carefully monitor how much deposits and dirt are washed off at each stage. For a heavily contaminated oil system, an increase in speed or a long ICE operation in the initial stages of flushing is unacceptable action. The indicator of the degree of contamination is the general condition of the drained flushing fluid. The pressure in the lubrication system and the flushing time can only be increased when the viscous deposits are washed off.

After flushing (especially with clean diesel fuel), you should be prepared for the fact that the engine can start with great difficulty at each stage. The fact is that diesel fuel has an insufficient lubricating effect, as a result of which it becomes more difficult to crank the crankshaft with a starter. This is the big minus of washing with diesel fuel, since there is increased engine wear at each start. Also, before washing with diesel fuel, it is advisable to recharge and make sure that the starter is working.

Five Minute Flush, Flushing Oil and Reduced Base Grease Change Interval

The use of special equipment allows you to count on the best quality engine flushing, as such solutions incorporate active detergent components to remove various contaminants. There are two main types of flushes: "five-minute" and flushing oil;

The so-called "five minutes" are a detergent additive to used oil, on which the engine runs for several minutes before changing the lubricant. The compositions are actively used during service oil changes. Their obvious disadvantages rightly include a negative impact on oil seals, seals and other elements.

Flushing oils are similar solutions that are divided into two types:

• the first type is a product that is poured into the engine after the exhaust has been completely drained. Then the unit runs for a certain time at idle, after which the flushing oil is drained and fresh is poured. Note that such oils do not have sufficient lubricity, so they cannot be driven. To understand how much to flush the engine with this type of flushing oil, just look at the manufacturer's recommendations, which are indicated on the package.
• the second type includes a less common option, when the motor is operated on flushing oil in a gentle mode (avoiding revolutions above 2000 and load) for several tens of kilometers. Then the flushing must be drained and filled with fresh lubricant. The composition of this type of flushing oil is usually a mineral oil adapted for short-term operation in internal combustion engines. This wash contains a reinforced package of detergent additives for effective cleaning. We add that although the use of this oil is the least dangerous for the engine, such products are being actively squeezed out of the market by "five-minute" and other flushes that allow you to remove contaminants faster.

It is also worth noting that although flushing oil for a diesel engine or gasoline engine is a targeted development, simplifies the cleaning process itself and allows you to achieve good results, it can also aggressively affect various elements of the motor.

In view of the foregoing, it is impossible to unambiguously answer the question of which flushing oil is better for a gasoline engine. A similar situation is noted in the case of . general recommendation it can be considered that it is better to use more expensive and necessarily original flushing oils famous brands, which promise a minimum of harm to the motor.

Considering all the risks, many motorists prefer another affordable option - reducing the change intervals for conventional engine oil. If easier, quality oil already contains a package of detergent additives, which are much less aggressive to rubber and other parts of the internal combustion engine compared to special washes, diesel fuel, etc. It turns out that it is enough to fill good oil, on which you plan to continue to ride, then drive 2-3 thousand km on it. and refill the same.

We add that several such replacements will be enough when changing one oil to another, as well as for flushing a not very contaminated lubrication system, which makes it possible to do without the use of special equipment. The downside is that this method is quite expensive, since you will have to change the engine oil and oil filter at least twice in a short period of time.

Read also

Hydraulic lifters: what is it, what function do they perform, hydraulic lifter malfunctions and symptoms. Do-it-yourself repair and flushing of hydraulic lifters.

Flushing oil for the engine: in what cases and how is it used, what is included in the composition, advantages and disadvantages of this type of flushing of the lubrication system.

It would seem that there are plenty of reasons to clean the internal parts of the power unit before updating the lubricant. However, some motorists still doubt whether this is worth doing. In fact, flushing the engine when changing the oil is welcomed by many specialists and car service workers.

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The main reasons for flushing the engine

There is no single answer to the question of whether it is worth flushing the crankcase. There are a lot of factors influencing this process. Every experienced motorist knows a huge number of examples when the engine functioned perfectly after a “dirty” replacement or showed signs of unstable operation. The problem only happens once and is best avoided.

It turns out that in some situations flushing is necessary, in others it is not. That is how it is. For example, if the maintenance history of the car is “clean”, all the required measures were taken in a timely manner, there is no need for flushing. The same can be said if the engine is constantly filled with oil of the same type and classification.

On the other hand, it is necessary to wash the crankcase in the following cases:

• the viscosity of the new composition is different (synthetics changes to mineral water);
• replacement after repair power plant;
• the brand of the lubricant composition differs;
• on a car bought in a used condition (it is not known for certain which oil was filled in);
• gasoline or antifreeze got inside the motor.

When not to clean

In some special cases, flushing the engine when changing the oil is prohibited. Modern expensive synthetics include various useful additives. They not only lubricate the engine elements, but also clean the engine from various contaminants. After several replacements, a useful and clean layer forms on the walls of the parts and the inside of the engine. You can do the power plant a disservice if you wash it off.

Do not use "miraculous" additives. They will only worsen the properties of the native oil, mix with it, and the residual percentage of lubricant will change its structure for the worse.

Inexperienced motorists do this. They buy these supposedly magical additives, pour them into the engine, but do not change the filter. As a result, the dirt accumulated in the cleaning element breaks down and enters the lubrication system. What this leads to, we think, is not worth talking about.

You will learn more about when flushing the engine is not needed from the video from the user Denis MECHANIK.

How often should the pan be washed

Flushing must be carried out every time after a long and hard operation of the motor system of the car. The same must be done if antifreeze gets inside the power plant. In some cases, cleaning at the change is recommended as one of the ways to decarbonize the piston rings.

Thus, if the car was operated by the same owner, the same oil was poured, there are no problems with the engine, it is possible to flush the system every 200-300 thousand kilometers of the vehicle. In other cases, and under difficult engine operating conditions, it is recommended to reduce the replacement period.

Security measures

Some modern engines are so powerful that they can compete with airplanes. However, on the other hand, they can simultaneously require ultra-delicate handling, and any wrong action will lead to breakage of parts or the complete failure of the unit.

There are examples when, after using flushing, the motor stopped forever. Dismantling showed such a strong level of contamination that the deposits on the internal surfaces were as thick as an adult's finger.

A survey of the owners of these machines showed that before flushing, the engine signaled by flashing the light “ check engine". Indicator emergency pressure burned constantly, however, the dipstick showed a normal oil level. It was all about the degree of contamination of the motor.

Deposits may accumulate unexpectedly and in large quantities. In this case, only by mechanical hard cleaning will it be possible to cope with them. Therefore, before starting the flushing procedure, it is recommended to study the condition of the engine of your car, analyze the errors generated by on-board computer etc. In professional services, by the way, they do just that.

The situation can be especially dangerous when the internal parts cannot cope with oil starvation. This happens in case of clogging of the oil receiver and channels. Oil does not enter the block head, although the level of the filled lubricant remains normal.

Washing methods and rules

Proper cleaning of the engine includes several stages. All of them are equally important.

1. Before the procedure, consult with a specialist. It will indicate the specific features of a particular model of the power plant.
2. Make diagnostics of all mechanisms and subsystems of the engine.
3. Properly drain and change the old fluid.
4. Properly start the engine after filling in a new lubricant composition.

There are also several processing methods. It is customary to clean the engine today special composition, ordinary oil, additives, etc. There are chemical, soft, full-volume and forced fluid flushing.

Washing with chemicals

For some reason, some motorists believe that flushing must be carried out using chemical compounds, although this is not so. There is simply no panacea capable of ridding a motor installation of years of deposits in just five minutes.

Chemical flushing is the use of a liquid that corrodes oil seals and seals. If the package says that the product is safe for rubber parts, then it is not aggressive enough, and there will be no effect from such cleaning.

Chemical treatment is also considered the use of "five minutes". These compositions, however, managed to get notoriety and negative feedback. Motorists complain that after their application it is damaged piston group unit.

Soft wash

It implies just the use of such flushing fluids, the composition of which is less aggressive. One of well-known manufacturers such composition is THK. The product being produced is called Promo Express. Suitable for flushing not only gasoline, but also diesel power units.

Soft flushing is designed to cope with minor engine contamination. If the degree of deposits is too high, the motor has not been washed for a long period of time, it is better to use other means.

Soft liquids contain solvents that dissolve contaminants. However, they do not change the viscosity of the lubricant. As a rule, it is recommended to drive no more than 200 km on soft washing. Then the liquid must be completely changed, pouring normal high-quality oil.

See the video from the author of Hi-Gear for how to use soft flush.

Full flush

The essence of the method lies in the fact that a liquid with a large number of effective additives is poured into the pan. There are compositions with a long action and "fifteen minutes". The first type of liquid is used extremely rarely today, the second is more common.

The essence of washing is similar to other cleaning methods. The liquid is mixed with the remnants of contaminants, then it all drains from the sump. It is obligatory to operate the motor in XX mode for fifteen minutes.

Flushing the engine with forced fluid circulation

The best flushing method, as it involves the use of a special professional equipment. Its principle of operation is based on the use of pressure in the lubrication system, which doubles the cleaning effect.

The work is reduced to the following.

1. First, the oil filter is dismantled. In its place, a hose of the flushing installation is threaded.
2. Two other equipment tubes are mounted on the oil filler neck and the crankcase drain hole.
3. Washing liquid is poured into the installation.
4. The equipment turns on, air pressure supplies flushing fluid into the lubrication system.

The engine cannot be started with this flushing method. The liquid circulates through a filter located in the unit itself. As a result of such a run, dirt and deposits removed from the engine remain in it.

The nuances of cleaning

The expediency of carrying out this or that washing method should be clarified by the pros. Only a specialist can determine exactly how polluted the working environment of the engine is, and whether he needs a full procedure or you can get by with a soft flush, whether it is worth changing the oil or not.

Full cleaning required

Domestic motors

As a rule, domestically produced motors are characterized by less sensitive characteristics, capable of withstanding heavy loads, but at the same time low-power compared to foreign motors.

You can flush a domestic-made engine with conventional means. This is an inexpensive cleaning method, quite suitable for garage conditions.

Petrol power plants

Any gasoline, no matter how high-quality it may be, contains a certain percentage of tar-lacquer and rubber deposits. Over time, they settle on the walls of the fuel system, injector nozzles and valves.

Gasoline engines are washed by all known methods. When cleaning old deposits, the use of a special installation that supplies flushing fluid under pressure is welcome. A light degree of pollution is removed with the help of mild additives and "five minutes".

Diesel units

The diesel engine is more sensitive to flushing. It can only be cleaned with special ones designed only for such units. Use additives for gasoline internal combustion engines it is forbidden!

The difference in flushing is explained by the structure of the formation of deposits. Diesel engine needs more motor lubricant in nodes, rubbing elements should literally “float” in oil. Flushing fluids for gasoline ICEs are not able to provide the proper level of cleaning.

flushing diesel engine With a special tool, we can look at the video from the OBK Company channel.

Which flushing fluid to choose

Today there is no shortage of products for washing the engine. On the contrary, the choice of what to wash power unit, can be complicated by too many different compositions.

Five Minute

This method is carried out using the "five minutes". This is a detergent additive that is added to old oil. It is necessary to let the motor run for several minutes, then drain the liquid along with the used lubricant.

The disadvantages of the "five minutes" include its negative effect on seals and seals. The additive is too aggressive and tends to eat through rubber surfaces. But in a short period of time, without particularly getting dirty, you can change the oil.

Flushing oil and liquid

These are products that are poured into the engine after the old grease has been completely drained. The engine should run on the flush composition for some time, always in idling mode.

The disadvantage of oil is its imperfect lubricity. The flushing fluid does not allow the engine to run above 2000 rpm. This means that when cleaning the motor with this composition, it is necessary to monitor the speed of the power plant, not to allow them to be exceeded. As a result, the pressure in the lubrication system is not sufficiently increased, and the efficiency of work is reduced.

The debate about whether or not to flush the engine oil system during the engine oil change procedure does not subside. The idea of ​​the need for flushing has both supporters and opponents, not only in the camp of car owners, but also among professionals. We will not list the arguments and sides. The test of the AvtoDela magazine, conducted jointly with Liqui Moly specialists, made it possible to wash 180 grams of oil deposits from the engine walls, which already allows us to take an optimistic look at the need for the procedure itself.

Other studies also point to the need to flush the engine during an oil change. IN winter period In 2012-2013, a large number (about 400) of engine failures were noted in the Moscow region in the form of the impossibility of starting them in cold weather. Moreover, the “epidemic” affected fairly new cars that are still on the road. warranty repair. Everyone began to sin on the quality of engine oil and began to make claims to manufacturers of engine oils. Shell conducted research and found that the wax deposits in the engine turned out to be hydrocarbons that were not contained in the original oil composition. This suggested that fuel was the cause of the deposits. This fact caused a great discussion in the professional community. This fact allows us to look at the question of the need to flush the oil system during the engine oil change procedure from another angle.

So if you are one of those skeptics who believe that it is not necessary to flush the internal combustion engine during an oil change, you can read no further. Our experiment convinced us of the need for such a procedure. The matter remains small: you need to purchase a flushing of the engine oil system and use it. That's just the question - which one?

A search on the website of one of the auto shops found 160 items of oil system flushes, the price of which ranged from 55 to 745 rubles. The difference is 13 times, so there is a choice between cheap or expensive products. In order to understand what is actually poured into a bottle with a beautiful label, we tried to compare the features of the product declared by the manufacturer and its chemical composition, which was evaluated in the laboratory of MIC Fuel and Lubricants and published in the blog of one of the LiveJournal users. Let us take the trouble to explain what is written in the protocols of the laboratory and how it correlates with what the manufacturer himself claims about the product.

Why know this?

Before taking any pill or medicine, a reasonable person goes to the doctor and asks what kind of medicine it is. In extreme cases, each package of tablets contains an insert describing the chemical composition of the drug and its mechanism of action. In a car shop, no one bothers to write the chemical composition of an additive or cleaner in the instructions. Everything is limited to laudatory words that the buyer is acquiring a super tool that will make the engine perfectly clean. But no one is going to explain the cleaning mechanism, composition and possible complications if used improperly.

What can be in the bank?

There are three options for what cleaning additives are made from.

The first option is "five minutes".

These are additives based on an organic solvent, its task is to wash away accumulated deposits. As a rule, many “five-minutes” consist of a solvent. The Achilles' heel of such compositions is the dissolution, together with deposits of an oil film from rubbing pairs. That is why they can only be used when the engine is idling. If it is loaded while solvent is introduced into the oil, scoring may occur on unlubricated parts.

The second option is soft washes.

These are flushes that are added to the oil 100-300 km before the replacement procedure. They contain detergent-dispersant additives based on calcium sulfonates.

The third option is symbiosis.

Accordingly, it is possible to make a "compote" of washings of various types by adding a solvent and detergent-dispersant compositions to the extreme pressure additives.

Thus, knowing what is contained in the oil system flushing agent, one can draw conclusions about the effectiveness and safety of its use.

Probably everyone has heard about the old-fashioned way to clean the engine: add a solvent to the oil. Acetone - good remedy, clears everything. But only the time of this procedure must be counted with a stopwatch, so as not to overdo it and not ruin the engine. Therefore, the use of washes based on solvents (though not acetone) is very limited in time. The only question is: what deposits can they wash off in 5 minutes of application? The answer suggests itself: only superficial. And God forbid, during the procedure, rev up - you can kill the engine ...

Manufacturers are looking for more complex compounds to wash off deposits and not damage the engine. As the most interesting in terms of the composition of the five-minute flushing agent, Liqui Moly preparations can be cited. In addition to the solvent, the manufacturer adds an extreme pressure additive based on phosphorus and zinc (it reduces the likelihood of damaging the engine during the procedure), plus a detergent-dispersant additive based on calcium sulfonate. This additive package will not only complement the actions of the solvent and compensate for the shortcomings, but also minimize the poisoning of fresh oil with waste residues.

Such products are the safest and most effective, but, unfortunately, the composition of the engine flush is not written on the packaging, and you can find out what is mixed there only after laboratory tests. Our readers, based on the knowledge obtained from the article about the chemical composition of a particular flush, will be able to choose a worthy drug for their car.

Summary table of additive concentrations in engine oil system flushers

A drug	Additives
		extreme pressure
	Calcium Ca, mg/kg	Zinc Zn, mg/kg	Phosphorus P, mg/kg
FENOM synthetic
Liqui Moly Oil-Schlamm-Spulung
Hi-Gear Motor Flush HG2214
GUNK Motor Flush MF15ER
Liqui Moly Engine Flush
FENOM complex
LAVR Motor Flush Soft 200 km
ER PROFESSIONAL motor Flush P023EN
Liqui Moly Pro-Line Motor Spulung
Hi-Gear Motor Flush HG2204
LAVR Motor Flush Seven minutes
COMMA Petrol Engine
Hi-Gear Engine Tune-up HG2202
AMALIE Engine Flush
EL TRANS Cleaner Oil System
Bardahl Oil System Cleaner

CONCLUSIONS

The presented diagram clearly shows what the engine oil system flushing agent consists of.

But evaluating their effectiveness is not an easy task. Let's figure it out.

Let's start with the biggest "stick" with the adaptive engine flush RESURS. In it, we observe the highest concentration of antiwear additive, but it is not entirely clear why the manufacturer did not add a detergent-dispersant package? At the same time, the manufacturer himself declares that solvents are not used in the composition. Due to what then the agent achieves a special cleansing effect remains a mystery. Yes, and a high concentration of phosphorus can adversely affect the operation of the catalyst.

Next richest flush COMMA Petrol Engine. An unusual flush, which, according to the manufacturer, can be used both as a five-minute and as a long flush of the engine. From which we can conclude that organic solvents are not used in it, and the effect is achieved through the use of a shock dose of a detergent-dispersant additive. The use of such a package for a long time is dangerous in contaminated engines, as the oil system may not cope with exfoliated deposits and become clogged.

Next comes Liqui Moly Oil-Schlamm-Spulung- it is declared by the manufacturer as a long-acting flush, which is also confirmed by laboratory tests. In it, the detergent and anti-wear package does not greatly exceed the concentration of new oil, and adding it to the engine 100-200 km away can really lead to good result with minimal risk.

In lineups Liqui Moly Engine Flush And Liqui Moly Pro-Line Motor Spulung detergents and anti-seize additives are also present, but with an emphasis on protecting the engine during flushing. This is due to the fact that an organic solvent is introduced into the composition. As a result, we have a balanced composition with a solvent, protective and washing component.

Preparations Hi-Gear Motor Flush HG2214, ER PROFESSIONAL motor Flush P023EN, Hi-Gear Motor Flush HG2204 And EL TRANS Cleaner Oil System the test showed the presence of only a detergent-dispersant additive. Such a composition can hardly be called balanced. The manufacturer is clearly not concerned about the protection of engine parts during the flushing procedure.

Formulas that do not contain detergents or EP additives consist of a single solvent. Their use can lead to increased wear of the engine in friction pairs due to the dissolution of the oil film by the engine flushing agent.

Comments by Liqui Moly technical specialist Dmitry Rudakov

“The main part of any engine flush additive is the solvent. The task of the solvent is to thin the engine oil for better circulation and penetration into thin gaps. Also, the solvent removes some of the deposits in the engine. Most manufacturing companies believe that this is enough, forgetting that flushing must be both effective and safe. The effectiveness of solvents alone is not enough to fully remove deposits, so eminent auto chemical companies add a detergent-dispersant additive package, similar to that used in modern motor oils. It is possible to determine whether such a complex is added or the manufacturer “saved” on the basis of laboratory analysis, which was done in this test. The presence of alkali and alkaline earth metals (ex: sodium or calcium) in the washing clearly indicates additional detergent additives and brings the product under study into the category of highly effective ones.

About safety: it is clear that the solvent in the flushing composition dilutes the oil, this leads to a thinning of the oil film and the risk of damage to modern high-powered engines (seizures and sticking). Responsible manufacturers solve this problem by adding EP additives, again closely related to the complex used in standard additive packages of modern motor oils. The same lab analysis, for elevated zinc and phosphorus levels, concludes that anti-seize components have been added and the flush is safe.

It is clear that the cheapest washes are those consisting of pure solvent. A full-fledged complex of detergent-dispersant and anti-seize additives increases the cost of the product, but gives the consumer confidence in the safety of the engine flush procedure, and sometimes one cannot do without flushing the oil system.

As a postscript

We added this paragraph for those who believe that the engine does not need to be washed, but still read the introduction. More recently, the magazine "Behind the Rulem" conducted a demonstrative test, in which it evaluated such an effect as poisoning fresh oil with the remnants of the old one after the replacement procedure.

A motor test showed that the use of engine flushing agents allows not only to reduce deposits in the engine, but also to reduce the change in the physico-chemical parameters of fresh engine oil due to mixing with waste that is not drained from the engine.

FENOM synthetic - engine lubrication system cleaner, test

CLAIMED FEATURES

The manufacturer claims that FENOM synthetic engine oil additive is a 100% synthetic product that is designed to effectively clean high and low temperature deposits in the lubrication system and internal parts of gasoline and diesel engines that use synthetic engine oils. Significantly increases the detergent and dispersant properties of the engine oil to be changed. Provides improved mobility of piston rings. Restores engine power. Safe for catalytic converters, oil seals and gaskets.

MODE OF APPLICATION

TEST RESULTS

A laboratory study showed that microelements are present in the FENOM Synthetic oil additive: calcium Ca - 22 mg/kg, magnesium Mg - 0 mg/kg, boron B 0 mg/kg, zinc Zn - 1 mg/kg and phosphorus P - 4 mg/kg.

The composition of trace elements indicates that traces of calcium are present in "FENOM synthetic". Thus, we have an organic solvent. It is difficult to explain why it improves engine performance in such a comprehensive way, as the manufacturer claims.

Liqui Moly Oil-Schlamm-Spulung - oil sludge flush test

CLAIMED FEATURES

Flushing from oil sludge Liqui Moly Oil-Schlamm-Spulung penetrates deep into the most inaccessible places and cleans all internal hydraulic drives in the engine: hydraulic compensators, hydraulic tensioners, VVT-i, V-TEC, VANOS. Thoroughly dissolves sludge and old dirt. Flushing is universal for diesel and gasoline engines. Safely, gently cleanses in layers. Does not clog the channels and ducts of the oil system. No residue is removed from the system. Does not impair the properties of the new oil. Forms a protective layer that reduces friction.

Liqui Moly Oil-Schlamm-Spulung is recommended for old engine contamination with oil sludge; when water enters the oil system; with prolonged use of low-grade oils and fuels; with constant or prolonged overheating of the engine; in the presence of visible sludge deposits; at the beginning of the operation of the car with secondary market or after a long period of inactivity; with the sound of hydraulic lifters.

APPLICATION FEATURES

300 ml of Liqui Moly Oil-Schlamm-Spulung are intended for 5 liters of engine oil. The composition must be added to the old oil 100-300 km before the planned change date and the car should be operated as usual, not exceeding 2/3 of the engine power. Then drain the old oil, replace the oil filter and refill with new oil.

TEST RESULTS

A laboratory study showed that microelements are present in the washing of Liqui Moly Oil-Schlamm-Spulung: calcium Ca - 2399 mg / kg, magnesium Mg - 0 mg / kg, boron B - 4 mg / kg, zinc Zn - 1946 mg / kg and phosphorus P - 2050 mg/kg.

The composition of the elements in the Liqui Moly Oil-Schlamm-Spulung additive is identical to the package included in fresh commercial oil. The addition of an additive “refreshes” the used engine oil, thereby activating the self-cleaning process. The presence of calcium indicates a powerful package of detergent additives, the concentration of which is 15-20% higher than the standard values. The presence of zinc and phosphorus indicates the presence of anti-wear components. Adding such a package to an engine 100-200 km away can really lead to a good result with minimal risks.

Hi-Gear Motor Flush HG2214 - 10-minute engine flush test

CLAIMED FEATURES

10-minute engine flush Hi-Gear Motor Flush with ER HG2214 (444 ml) for 4-cylinder engines gently and safely cleans the engine, provides conditions for reliable oil supply to rubbing parts.

Hi-Gear flushing removes carbon deposits from the lubrication system channels and internal engine cavities, improves oil circulation and heat dissipation from parts. It also restores the mobility of oil scraper and compression rings, adapts the lubrication system to the subsequent use of metal conditioners. Safe for rubber seals, oil seals and valve stem seals. Contains ER (Energy Release) - "friction winner". HG2214 is compatible with all types of oils and engines, including turbocharged ones. Before use, warm up and turn off the engine, then pour flushing into the oil filler neck, start the engine and let it idle for 10 minutes. Shut down, drain the oil, replace the filter and refill with fresh oil. This package is designed for a lubrication system with a volume of 4-5 liters.

TEST RESULTS

A laboratory study showed that microelements are present in the Hi-Gear Motor Flush HG2214 10-minute wash: calcium Ca - 2247 mg / kg, magnesium Mg - 6 mg / kg, boron B - 0 mg / kg, zinc Zn - 2 mg / kg and phosphorus P - 5 mg/kg.

The presence and concentration of calcium in the Hi-Gear Motor Flush HG2214 10-minute engine wash indicates the presence of a detergent package of additives.

GUNK Motor Flush MF15ER Super Concentrated 5 Minute Engine Flush Test

CLAIMED FEATURES

GUNK Motor Flush additive is a mixture of petroleum distillates and special cleaning components designed to quickly clean the engine oil system. Guaranteed to remove carbon deposits from the channels of the lubrication system and the internal cavities of the engine. Safe for oil seals, seals and valve stem seals. Effective against all types of motor oils.

MODE OF APPLICATION

The manufacturer recommends pouring GUNK Motor Flush into the engine before changing the oil and filter. After that, you need to start the engine and leave it to idle for 5 minutes. GUNK Motor Flush will circulate throughout the engine lubrication system, removing sludge, tar and varnish deposits from engine parts and oil sump, eliminating valve and ring sticking.

Do not drive the vehicle during the engine flush procedure. After the procedure, it is necessary to drain the oil and remove the oil filter. It is not recommended to store the container with GUNK Motor Flush open.

TEST RESULTS

A laboratory study showed that the GUNK Motor Flush oil additive contains trace elements: calcium Ca - 1 mg/kg, magnesium Mg - 0 mg/kg, boron B - 0 mg/kg, zinc Zn - 0 mg/kg and phosphorus P - 4 mg/kg.

Such a set indicates that there are no microelements specific to oil additive packages in GUNK Motor Flush. Thus, we have an organic solvent. It is not clear why it improves engine performance so comprehensively, as the manufacturer claims.

Liqui Moly Engine Flush - 5 Minute flushing the internal combustion engine, test

CLAIMED FEATURES

Flushing the Liqui Moly Engine Flush oil system gently removes common contaminants. The composition is universal for diesel and gasoline engines. Safely, gently, in layers cleans the engine. Does not clog the channels and ducts of the oil system. Evaporates immediately after use. No residue is removed from the system. Does not impair the properties of the new oil. Forms a protective layer that reduces friction.

APPLICATION FEATURES

The composition of Liqui Moly Engine Flush must be added to the warmed oil before changing it, start the engine and let it idle for 5-10 minutes. Drain the oil, replace the oil filter and refill with fresh high quality oil. 300 ml of additive is sufficient for 5 liters of engine oil.

TEST RESULTS

A laboratory study showed that there are trace elements in the Liqui Moly Engine Flush: calcium Ca - 772 mg / kg, magnesium Mg - 0 mg / kg, boron B - 0 mg / kg, zinc Zn - 1980 mg / kg and phosphorus P - 1978 mg/kg.

The presence of calcium indicates the introduction of a detergent package of additives into the Liqui Moly Engine Flush, and fluorine and zinc demonstrate the presence of an antiwear additive in the formulation.

It turns out that the composition of Liqui Moly Engine Flush contains both detergent and anti-seize additives, but with an emphasis on protecting the engine during flushing. This is due to the fact that an organic solvent is introduced into the composition. As a result, we have a balanced composition with a solvent, protective and washing component.

FENOM complex - engine lubrication system cleaner, test

CLAIMED FEATURES

According to the manufacturer, "FENOM complex" is designed for deep cleaning of the lubrication system and internal parts of gasoline and diesel engines from carbon deposits in normal operation. Contains highly effective washing components and metal conditioner FENOM. Restores compression in the cylinders. Provides normalization of work of hydraulic compensators.

MODE OF APPLICATION

Warm up and shut off the engine before changing the engine oil. After that, it is necessary to pour the drug into the oil neck (1 pack per 3-5 liters of oil), start the engine and let it idle for 15 minutes. Stop the engine, drain the old oil, change the oil filter. Then pour in fresh oil.

TEST RESULTS

A laboratory study showed that the additive in the FENOM complex oil contains trace elements: calcium Ca - 5 mg / kg, magnesium Mg - 0 mg / kg, boron B - 0 mg / kg, zinc Zn - 3 mg / kg and phosphorus P - 41 mg/kg.

The composition of trace elements indicates that there are traces of calcium and traces of anti-wear additive in "FENOM complex". In general, we have an organic solvent.

LAVR Motor Flush Soft 200 km – detergent additive for oil, test

CLAIMED FEATURES

Detergent additive LAVR Motor Flush Soft 200 km (LAVR soft flush) is poured into the engine oil system 150-200 kilometers before changing the oil. One package of the drug is designed to flush the engine oil system with a volume of 4-6 liters. According to the manufacturer, the additive removes varnish, bituminous and greasy deposits in the engine oil system as carefully as possible. At the same time, thanks to dispersants, it protects the engine from premature wear and prevents clogging of channels and filters. The additive rejuvenates rubber cuffs and gaskets and is compatible with all types of engine oils.

APPLICATION FEATURES

Before using a detergent additive in LAVR Motor Flush Soft 200 km oil (LAVR soft flush), it is necessary to warm up the engine to operating temperature. After that, pour the additive into the oil filler neck and start the engine. Let it idle for 5 minutes, then start driving. After 150-200 kilometers, replace the oil filter and fill in new oil.

TEST RESULTS

A laboratory study showed that the additive in the LAVR Motor Flush Soft 200 km oil (LAVR soft flush) contains trace elements: calcium Ca - 24 mg / kg, magnesium Mg - 0 mg / kg, boron B - 1 mg / kg, zinc Zn - 10 mg/kg and phosphorus P 12 mg/kg.

In the composition of the additive in the LAVR Motor Flush Soft 200 km oil, only traces of additive elements were found, but not the additives themselves. From the result obtained, we can conclude that we have an organic solvent in front of us, and it is desirable to drive 150-200 km after adding it to the engine at idle.

ER PROFESSIONAL motor Flush P023RU - five-minute flushing of the engine lubrication system, test

CLAIMED FEATURES

The manufacturer claims that the flush contains Energy Release (ER) metal conditioner. It is claimed to be one of the most popular products distributed by AGA. More than ten permanent years on the front of the fight against friction and wear, many letters, calls and e-mails with thanks - that's what adorns the "work" book of a well-deserved veteran who can be trusted.

ER has been in over three million engines Russian cars, participated in a variety of independent tests, during which the effect of a number of drugs was compared, and an extensive group of ER adherents who use it on their cars, as they say from scratch, managed to drive 300 thousand kilometers in VAZs without engine overhaul.

APPLICATION FEATURES

Apply immediately before changing engine oil. Quickly cleans the surfaces of parts of the engine lubrication system and the cylinder-piston group from carbon deposits, soot, sludge, varnish and wear products. Cleans oil channels, restores pressure, improves oil circulation in the engine lubrication system. Restores compression.

TEST RESULTS

A laboratory study showed that ER PROFESSIONAL motor Flush contains trace elements: calcium Ca - 1772 mg/kg, magnesium Mg - 6 mg/kg, boron B - 1 mg/kg, zinc Zn - 2 mg/kg and phosphorus P - 8 mg/kg.

The composition of trace elements (calcium) in the sample suggests that we have a product with a package of detergent additives, similar to that added to oil in an average concentration. Thus, ER PROFESSIONAL motor Flush contains a detergent additive, due to which the engine is cleaned.

Liqui Moly Pro-Line Motor Spulung - engine flush, test

CLAIMED FEATURES

Liqui Moly Pro-Line Motor Spulung Engine Flush removes carbon deposits on the piston crown. Releases stuck rings and pressure reducing valve oil pump. Provides deep cleaning of the oil system in layers, completely dissolving any kind of contamination of the oil system. Removes insoluble particles and engine wear products. The additive completely evaporates after application, increasing the life of the new oil. Suitable for flushing manual transmissions. Does not clog the channels and ducts of the oil system. Forms a protective layer that reduces friction.

APPLICATION FEATURES

Liqui Moly Pro-Line Motor Spulung engine flush must be added to warm oil before changing, start the engine and let it idle for exactly 10 minutes. Drain the oil, replace the oil filter and refill with fresh high quality oil. 500 ml of additive is sufficient for 5 liters of engine oil.

TEST RESULTS

A laboratory study revealed that the Liqui Moly Pro-Line Motor Spulung engine wash contains trace elements: calcium Ca - 780 mg / kg, magnesium Mg - 0 mg / kg, boron B - 0 mg / kg, zinc Zn - 2181 mg / kg and phosphorus P - 2179 mg/kg.

Analysis of the microelement composition shows that the additive contains an anti-wear package based on zinc and phosphorus, as well as a detergent package of additives, as indicated by calcium. The manufacturer also reports the presence of an organic solvent in the composition of the additive. The picture of the use of a flushing additive will be supplemented by a test conducted by the publication, according to the results of which it was possible to wash out of the engine.

Hi-Gear Motor Flush HG2204 - High Mileage 5 Minute Engine Flush Test

CLAIMED FEATURES

The website of the manufacturer of the Hi-Gear Motor Flush HG2204 not only talks about what the flush consists of, but also conducts an educational program on why it is needed: “Specialists have found that the use of even high-quality oils does not prevent the formation of harmful carbon deposits on the internal surfaces of the engine and in the channels of the lubrication system. When changing oil without flushing, most of the contaminants remain in the engine. This is especially true for engines with high mileage, where the action of fresh oil detergents is much faster due to the presence of strong contaminants. As a result, active formation of oxidation and wear products occurs, which clog the oil channels, are deposited on the internal surfaces, which reduces heat dissipation, impairs the lubrication of parts, and causes coking of the piston rings. All this leads to an increase in wear of parts, a decrease in power and a deterioration in the fuel efficiency of the engine.”

It is claimed that the high-performance formula used in the Hi-Gear HG2204 flush is designed specifically for high-mileage engines with heavy contamination, and allows you to remove most of them, including from the engine sump. This helps to maintain the working properties of the oil for a longer time and extend the life of the engine as a whole. The use of this flush at an oil change removes most of the dirt, oil decomposition products and carbon deposits (including from the engine sump). As a result of the use of this additive, fresh oil and a new oil filter work more efficiently. The oil retains its properties longer, which leads to an extension of the life of the engine as a whole.

The following distinctive features composition Hi-Gear HG2204

· Hi-Gear HG2204 is a special flush formula designed for heavily contaminated engines. The use of this engine flush allows you to remove most of all characteristic contaminants.

· Flushing engine Hi-Gear HG2204 effectively removes old deposits, carbon deposits, slag, oxidation products from the channels of the lubrication system and the internal cavities of the engine.

· Hi-Gear 5-minute engine flush for vehicles with high mileage helps to clean the surface of the pistons from varnish deposits.

Eliminates coking of oil scraper and compression rings, restores their mobility, thereby increasing compression, reducing gas breakthrough into the engine crankcase and oil oxidation.

· Eliminates the need for flushing oils. With regular use, it helps to restore engine performance, reduce wear of its parts and increase service life.

· Safe for rubber seals, oil seals, valve stem seals.

Compatible with all mineral and synthetic motor oils.

APPLICATION FEATURES

Before applying the Hi-Gear Motor Flush HG2204 5-minute engine flush, the engine must first be warmed up to operating temperature and then shut off. Then the jar with the additive must be shaken several times and its contents poured into the oil filler neck of the car. Start the engine and let it idle for 5-7 minutes. It is not recommended to exceed the crankshaft speed above 2000 rpm. It is forbidden to drive a car with a flooded flush. After the set time has passed, it is necessary to drain the old oil, remove the old oil filter, install a new filter and fill in new oil. The packaging is designed for a lubrication system with a volume of 4-5 liters. For a larger volume lubrication system, it is recommended to use a larger amount of product.

TEST RESULTS

A laboratory study has shown that a five-minute wash of the Hi-Gear Motor Flush HG2204 engine contains trace elements: calcium Ca - 1682 mg / kg, magnesium Mg - 6 mg / kg, boron B - 0 mg / kg, zinc Zn - 0 mg / kg and phosphorus P - 7 mg/kg.

A five-minute Hi-Gear Motor Flush HG2204 found only a detergent additive, as indicated by the calcium content. And what is most unusual: the concentration of detergent in the preparation is lower than in a 10-minute engine flush of the same manufacturer.

RESURS - adaptive engine flush, test

CLAIMED FEATURES

Adaptive engine flush RESURS is designed for internal flushing of the lubrication system of gasoline and diesel engines, removing carbon deposits, sludge, films, resin deposits while maintaining performance characteristics engines.

The RESURS additive is intended for deep cleaning of the engine oil system. Ideal for transitioning from mineral to synthetic oil and vice versa, or to another brand of oil. Contains special components Aktiv Subs, adapting one type of oil to another. Recommended for all types of engines. With maximum effect, cleans the internal surfaces of the engine from hard-to-remove sludge and varnish deposits.

Does not contain acids, acetone or kerosene, other similar solvents that lead to scuffing.

RESURS Adaptive Engine Flush includes purified mineral oils, detergent-dispersant, anti-corrosion, neutralizing and anti-wear substances that restore parts and save the engine during washing.

APPLICATION FEATURES

The manufacturer recommends using the RESURS adaptive flush for worn engines that “eat” a lot of oil and whose walls are covered with heavy deposits. And he also suggests adding RESURS adaptive flush to pure oil at the rate of 1 bottle per 3-5 liters of oil and then use it as a flush oil.

To use, it is necessary to pour the RESURS engine flush into the oil filler neck of the engine warmed up to operating temperature. Start the engine and let it idle for 5-10 minutes, then drain the flush with the oil and replace the oil filter.

WARNING: do not operate the vehicle when the RESURS engine flush is in the system.

TEST RESULTS

A laboratory study showed that the RESURS adaptive engine wash contains trace elements: calcium Ca - 11 mg/kg, magnesium Mg - 0 mg/kg, boron B - 1 mg/kg, zinc Zn - 6093 mg/kg and phosphorus P - 6044 mg /kg.

Thus, this flush contains a powerful anti-wear package and the question immediately arises, where are the detergent components? Why did the manufacturer not add detergent-dispersant additives to the formulation, the task of which is to wash the engine and remove all the sludge from it? At the same time, their presence is declared in the composition, but is absent in fact. In addition, experts immediately asked themselves what would happen to the catalyst if phosphorus entered it at a concentration much higher than the requirements of European standards. For this drug, the test revealed more questions than answers.

LAVR Motor Flush Seven minutes - engine flush, test

CLAIMED FEATURES

The manufacturer claims that LAVR Motor Flush Seven minutes (LAVR 7-minute flush) is a professional preparation for flushing the oil system of passenger car engines. Recommended for all types of gasoline and diesel engines of passenger cars, including turbocharged engines. One package of the drug is designed to flush the engine oil system with a volume of 4-5 liters.

It is also said that the effectiveness of LAVR Motor Flush Seven minutes (LAVR 7-minute flush) is achieved due to the increased content of detergent components and dispersants, which actively affect contaminants and remove them from the engine oil system as safely as possible.

The use of LAVR Motor Flush Seven minutes prevents coking of piston rings and increases the service life of new oil, and also prevents sticking of hydraulic compensators and hydraulic tensioners, rejuvenates rubber cuffs and gaskets.

The product is claimed to be ideal for flushing turbocharged engines, as well as lubrication systems that have not been flushed for a long period.

TEST RESULTS

Laboratory study found that the following trace elements are present in the "LAVR 7-minute rinse": calcium Ca - 0 mg/kg, magnesium Mg - 0 mg/kg, boron B - 0 mg/kg, zinc Zn - 1 mg/kg and phosphorus P - 8 mg/kg.

A similar composition indicates that the LAVR Motor Flush Seven minutes engine flush consists of an oil deposit solvent.

COMMA Petrol Engine - engine oil cleaner, test

CLAIMED FEATURES

Synthetically enhanced COMMA Petrol Engine oil additive designed for quick flushing of the engine oil system passenger car or van before changing the oil. Eliminates harmful deposits and sludge. Neutralizes harmful acids. Cleans the engine, allowing new oil to circulate freely in the engine. Helps release sticky valves and piston rings.

APPLICATION FEATURES

The manufacturer offers two ways to apply the COMMA Petrol Engine additive. Quick - pour the composition before changing the engine oil and let the engine run for 10 minutes, after which the oil should be changed. And the second way is to fill in the additive a week before changing the oil.

TEST RESULTS

A laboratory study showed that the COMMA Petrol Engine engine oil additive contains trace elements: calcium Ca - 3509 mg / kg, magnesium Mg - 8 mg / kg, boron B - 116 mg / kg, zinc Zn - 2572 mg / kg, phosphorus P - 2611 mg/kg and silicon Si - 13 mg/kg.

According to the data obtained, the COMMA Petrol Engine engine oil additive contains a package of detergent additives, as evidenced by the presence of calcium, and an anti-wear package (zinc, phosphorus), and an anti-friction additive is also possible. The concentration of the package is almost twice as high as in engine oil. The pitfalls lie elsewhere and open upon careful reading of the instructions. It turns out that the same remedy can be used both as a standard five-minute and as a long-term additive. A reasonable question arises: how did the manufacturer manage to combine the efficiency of cleaning with a quick flush in the service and the possibility of long-term operation in the engine? After all, for the first one, it is necessary to introduce solvents into the composition to increase efficiency, and for the second method of application, solvents cannot be used, since it thins the oil film and, when a load occurs, leads to scuffing in friction pairs.

Judging by the results of chemical analysis, in order to achieve the declared features, COMMA Petrol Engine does not use organic solvents, but cleaning is carried out due to a powerful detergent-dispersant additive package. The peculiarity of his work is not dissolution, but exfoliation of oil deposits, which begin to drift through the system and must be captured by the filter. In systems with a small amount of deposits, this is acceptable, but for heavily contaminated engines it is fraught with clogging of the oil channels. Therefore, in the case of using the additive on a contaminated engine, we would recommend limiting it to a 10 minute flush cycle.

Hi-Gear Engine Tune-up HG2202 - soft engine cleaner, test

CLAIMED FEATURES

Soft engine cleaner Hi-Gear Engine Tune-up HG2202 is designed to restore engine factory settings. Classic, time-tested formula. Effectively cleans the engine lubrication system, restores the performance of the PCV valve and cleans the crankcase ventilation system modern cars. Releases stuck valve lifters, eliminating their knocking. Cleans piston rings from deposits, restores their mobility and fit. The Hi-Gear Engine Tune-up HG2202 cleaner is especially effective for engines with medium to high mileage.

APPLICATION FEATURES

It is added to fresh oil after each oil change. For older engines with high oil burnout, it is recommended to additionally apply this composition 100-200 km before changing the oil.

TEST RESULTS

A laboratory study showed that the soft engine cleaner Hi-Gear Engine Tune-up HG2202 contains trace elements: calcium Ca - 1 mg / kg, magnesium Mg - 0 mg / kg, boron B - 0 mg / kg, zinc Zn - 0 mg / kg, phosphorus P - 7 mg/kg, and silicon Si - 18 mg/kg.

As part of this cleaner, which the manufacturer recommends pouring into new oil, there are no detergents or extreme pressure additives. There are traces of hydrosilicates, but how they can help the engine in homeopathic doses is not clear.

AMALIE Engine Flush - flushing fluid, test

CLAIMED FEATURES

Amalie Engine Flush engine oil system flushing fluid is a service product for effective cleaning of the engine oil system from varnish formations, soot, carbon deposits in technological channels. Significantly improves heat transfer and restores piston ring mobility. Absolutely safe for rubber and polymer products.

APPLICATION FEATURES

It is added to the engine in used engine oil before service replacement for 5 minutes. Not recommended for heavily worn engines.

TEST RESULTS

A laboratory study showed that Amalie Engine Flush contains trace elements: calcium Ca - 19 mg / kg, magnesium Mg - 8 mg / kg, boron B - 0 mg / kg, zinc Zn - 16 mg / kg and phosphorus P - 20 mg/kg.

The trace element composition of the Amalie Engine Flush fluid shows that we have nothing but a solvent.

EL TRANS Cleaner Oil System – flushing the oil system, test

CLAIMED FEATURES

Flushing the EL TRANS Cleaner Oil System oil system removes and dissolves carbon deposits and other wear products. Eliminates coking of piston rings, restores their mobility and fit.

APPLICATION FEATURES

Use the "EL TRANS Cleaner Oil System" flush immediately before changing the used oil. Before use, shake the contents of the bottle, then pour it into the oil filler neck of a warm, turned off engine. After the oil neck is closed, the engine must be started and left to idle for 5-20 minutes. Then you need to turn off the engine and drain the used oil. Change the oil filter and fill with fresh engine oil.

TEST RESULTS

A laboratory study showed that the EL TRANS Cleaner Oil System wash contains trace elements: calcium Ca - 1677 mg/kg, magnesium Mg - 6 mg/kg, boron B - 0 mg/kg, zinc Zn - 10 mg/kg and phosphorus P - 13 mg/kg.

Analysis of the microelement composition shows the presence of detergent additives in the washing, as indicated by the concentration of calcium.

Bardahl Oil System Cleaner - engine cleaner, test

CLAIMED FEATURES

Bardahl Oil System Cleaner is a special additive for flushing the engine of sludge and other deposits. The composition keeps the particles of pollution in suspension until the oil is completely drained. Extends engine life by cleaning the oil system. Does not contain detergents and components that degrade the characteristics of the new oil.

APPLICATION FEATURES

To use, pour the contents of a bottle of Bardahl Oil System Cleaner into the engine oil filler neck. Then you need to drive 200-300 km or let the engine run at medium speed (3000-4000 rpm) for 15-20 minutes. Then change the oil and oil filter.

TEST RESULTS

A laboratory study showed that the Bardahl Oil System Cleaner engine cleaner contains trace elements: calcium Ca - 4 mg / kg, magnesium Mg - 0 mg / kg, boron B - 0 mg / kg, zinc Zn - 150 mg / kg and phosphorus P - 153 mg/kg.

Analysis of the microelement composition shows that the main cleaning component of Bardahl Oil System Cleaner is a solvent, but at the same time, an EP additive is present in the composition in a small concentration, as indicated by the presence of zinc and phosphorus.