This is what many owners of new cars do, believing that for modern engines that are filled with synthetic oils, it does not matter what season it is in the yard, and there is no difference - at least plus twenty on the thermometer, at least minus.

Meanwhile, even high-quality synthetic oil at low temperatures becomes more viscous; semi-synthetic and hydrocracking oils thicken even more. The pumpability of oil through the system is reduced, which is why a cold engine has to work in conditions of lubrication deficiency. First of all, the cylinder-piston group, crankshaft and crankshaft bearings suffer from this. camshaft as well as turbines. The insufficient thickness of the oil film leads to the fact that metal-to-metal friction occurs in the parts, provoking their accelerated wear. This also applies to transmissions, especially automatic ones, since transmission oils also become more viscous in sub-zero temperatures in the same way.

When running a cold engine on Idling and gearboxes in neutral (“parking”), the deteriorated pumpability of the oil causes minimal damage, which is incorporated into the design. But if, immediately after starting the engine, you start moving, especially in an “aggressive” manner, with sharp accelerations, then with a lack of lubrication in fast moving parts, “abnormal” destructive friction will occur, “eating up” the motor resource.

The second extreme: "the longer you heat - longer without repair"

This opinion is common among owners of cars with already solid mileage, as well as among many drivers with great experience who started back at Soviet cars, in the engines of which it was poured mineral oil a la "M-8".

From the standpoint of creating the most gentle mode for rubbing engine parts operating with a lack of lubrication, this approach is absolutely correct, even for new cars. However, prolonged (over 5 minutes) idling of the engine also causes problems, especially when this happens constantly.

In an engine running “at idle”, the fuel-air mixture is over-enriched and does not burn out completely, which causes increased carbon deposits in the combustion chamber, as well as on spark plugs for gasoline and “oiling” of injector nozzles for diesel. For an already warmed-up engine (a car standing in a traffic jam), although this effect is present, it is not so pronounced and is provided constructively. However, in a cold engine, which warms up very slowly in severe frost “at idle” (especially a diesel engine), soot is formed in the cylinders much more actively. That over time will also worsen the operation of the motor and require repair.

Golden mean: "5 minutes, 2,000 revolutions"

As recommended by service station technicians and park maintenance engineers cars, you need to follow the rule of "golden mean". You should not immediately go as soon as the engine starts, just as you should not try to warm it up to 90 degrees in the parking lot.

The best option « winter operation»: warm up the engine for 3-5 minutes and then drive without sharp accelerations, without spinning the motor over 2,000 rpm, until the engine warms up to 80-90 degrees. (It was this method of warming up that was recommended to us by service specialists official dealers specifically Mazda and Volkswagen.)

Most of our country is located in latitudes where the temperature in winter drops below zero, sometimes significantly. The operation of vehicles at this time, as a rule, does not stop. It is generally accepted that in the cold, a car engine needs a certain warm-up, although there are opponents of such an action. What is the actual situation, is it necessary to warm up the engine in winter, if so, why, and how to do it right?

Modern cars

Today, petrol and diesel cars equipped with engines with a complex fuel supply system equipped with injection injection. Compared to engines carburetor machines, power units have undergone many changes. Injection engines are more technologically advanced, they have an advanced fuel supply mechanism, the materials themselves from which engines are made have changed, oils, coolants have also evolved.

How the injector works:

A serviceable one in sub-zero temperatures normally works normally immediately after start-up, that is, theoretically, it is permissible to start movement immediately. But many car owners believe that engine warm-up is needed - from a small one, for a couple of minutes, to full, with the engine running at operating temperature.

Technical manuals for injection vehicles basically state that warming up the engine before driving is not necessary. Car manufacturers argue this for several reasons:

• engines are made from quality materials well tolerated "minus" overboard;
• technical fluids are made taking into account weather conditions (the main thing is to fill the engine with correct oil!), and allow you to start moving in a gentle mode immediately;
• when driving at low speeds, the fluid and the engine warm up evenly.

The engine resource, according to representatives of the automotive industry, does not suffer much at the same time.

This is partly true - technology does not stand still, engines are constantly improving. But there is another factor, because of which automakers are against warming up the engine.

Interestingly, one of the reasons for such statements is the influence of regulatory authorities on the auto industry, including environmental protection services. It is known that warming up the engine at idle takes longer than in motion, more fuel is consumed, and the amount of harmful emissions also increases. And the catalytic converter, which should neutralize those, is included in the work only when a certain temperature is reached. Therefore, it is proposed to warm the engine on the go, as it is less harmful to nature.

In some states, legislation has been introduced to regulate this issue. So, in a number of European countries there are bans on:

• long engine idle;
• warming up the engine or long periods of inactivity in parking lots and within residential areas.

If the police find a violation of the ban, the car owner will face a large fine.

When considering these laws, it should be borne in mind that:

• the Russian Federation has not yet adopted similar, strict environmental standards for engines;
• natural conditions are often more severe;
• the main task for many motorists is to keep the engine in good condition, since the car in our country continues to be, to a certain extent, a luxury, and major repairs (or replacement of the car), unlike the current one, are not available to all car owners.

Interesting: in the regions of the Far North, where temperatures drop below 50 degrees in winter, turning off the engine is tantamount to the death of the power unit: it is very difficult to “revive” a frozen engine with iced liquids, especially if there is no warm box. Therefore, in especially cold seasons, cars are not jammed there for days and weeks. The vehicle must be specially prepared to withstand such a long operation without interruption in extreme conditions.

Arguments "for" warming up

The ideas of supporters of warming up the engine can be expressed in the following list:

1. Warming up prolongs the life of the engine. In addition to viscous oil, there is such a thing as thermal contraction of the metal: in the cold, it contracts, and the gaps between the metal components of the engine increase. The oil, remaining thick, does not allow creating the necessary pressure in the line, and the engine parts are in a state of oil starvation for some time, which causes increased wear, which increases even more if you start moving immediately. There is an opinion that one cold start of the engine is equal to 100 km. normal mileage.
2. difference between temperatures engine oil and engine coolant. So, when the coolant in a car engine is warmed up to the optimum 90 degrees, the engine oil is still relatively cold (about 50 degrees), and it will take time for it to reach operating temperature. And the latter is critical for the normal operation of the internal combustion engine, so it is better to wait and warm up the engine in winter to a temperature of at least 4-5 degrees.

Arguments against"

Supporters of the decision to stop the practice of warming up the engine argue their position with the following arguments:

• Manufacturers recommendations - car manuals advise you to go right away, and many prefer to stick to this.

The basis of the opinion why it is impossible to warm up car engines in winter is the assumption that the manufacturer would never deliberately indicate in the instructions something that harms the vehicle, especially if it concerns well-known and large car brands. After all, an accelerated failure of the engine leads to its repair under warranty, which is unprofitable for the plant.

This is true, but in part. If you look closely at the terms of the car warranty, often it is only 100-150 thousand km. run. And such a mileage is able to drive without major breakdowns, even a car that is operated in harsh conditions. There may be situations when there is a separate guarantee for engines, but even here, in the event of a breakdown, it will be difficult to prove that it was the line in the manual with the recommendation not to warm the engine that was to blame.

There is an opinion from the field of “conspiracy theories” that automakers deliberately advise not to warm up the engine in order to force motorists to make repairs, purchase spare parts, etc. Certainly, modern machines not engineers, but marketers, and the principle of “programmed failure” has successfully migrated from the automotive industry to many areas. But still, this seems unlikely, since they will simply stop buying equipment that breaks down quickly, because a car is not a kettle, and is purchased for several years. If the engine starts to frankly “crumble”, they will simply get rid of the car, and the model will receive negative feedback affecting the reputation of the brand as a whole.

• The quality of engine materials and oils.

This point was discussed above - it is believed that the metal of engines, other components and liquids are adapted for a “cold start”, the main thing is not to “turn” the engine immediately, moving smoothly, and there is no need to warm up the engine even in winter before the trip.

• Reduced fuel consumption.

The argument is obvious: the less the car idles, the less fuel the engine will burn. In addition, emissions of harmful substances will also decrease.

• The engine heats up faster while driving.

This is true, any car owner can verify the correctness of the statement in practice. Under moderate load, the engine will reach operating temperature much faster. What is especially true if not preheating studio, creating a comfortable, and for the driver in the cabin in advance. But it is still not recommended to start off immediately in the cold.

• Incorrect operation of the engine ignition in cold idling.

Modern engines equipped with electronic sensors are also guided by the outboard temperature, adjusting the ratio of air and fuel supplied to the engine. In a cold engine, gasoline evaporates worse, and the fuel mixture is not optimal in composition. To compensate for this, the engine ECU gives a command to add gasoline to the combustion chamber until the engine warms up to at least 4-5 degrees.

It turns out that with a long "idle" warm-up, the engine gains temperature more slowly, while not being under load. At the same time, excess fuel does not burn out, settling on the surfaces of the engine cylinders, which can later cause various problems, including in the lubrication system. Especially harmful is the regular "cold" warm-up until the engine reaches full operating temperature.

carbureted cars

The myth about the need for a long "full" warm-up of the engine came from an era when all cars were carbureted. The power supply system of such an engine is simpler: the composition fuel mixture does not change electronically "on the go" in accordance with the readings of the sensors, but is set by the carburetor setting. And until the engine reaches operating temperature, the quality of the fuel mixture remains suboptimal, the power plant is unstable, with failures, and may even stall. This is where the common myth comes from that any car needs to be warmed up completely, and only after that start moving.

There are fewer and fewer vehicles equipped with carburetors, but they still go on Russian roads, especially for samples of the domestic auto industry.

Scheme of work:

Important: the engine, where the mixture is regulated by the carburetor, must be warmed up in the cold.

So is it worth warming up the engine

From all of the above, we can conclude: if you have a car with carbureted engine- it is necessary to warm up until the engine reaches normal temperature, and, preferably, outside the winter period. Is it worth warming up a car engine in winter if it is a gasoline injector or a diesel engine?

Modern cars do not need a long warm-up: it is enough to let the engine run for 5-15 minutes (and in winter this is just enough to shake the snow off the car and wipe the headlights). The engine will warm up a little and slightly drop the speed from “warm-up” to close to normal, the oil will also become less viscous and will be able to provide the proper quality of lubrication. After that, you can gently start moving without overloading the engine unnecessarily in the first minutes.

Diesel engines

The issue of warming up diesel engines is separate, due to the characteristics of diesel fuel. Car owners with power plants know that in the cold it is more difficult to start a diesel engine than a gasoline one. This difficulty arises from the tendency of diesel fuel to thicken in the cold: it becomes viscous, poorly sprayed by engine injectors and ignites reluctantly.

There are several varieties of DT:

• summer diesel fuel designed for air temperatures from 0 degrees and above;
• winter, suitable for work in conditions up to -30 degrees;
• arctic, for the extreme cold of the Far North.

Most of the problems of starting a diesel engine for car owners with such are associated with the wrong choice of diesel grade: in winter, summer fuel is poured into the tank.

To facilitate starting, there are pre-heating systems (“webasto”, etc.), which allow eliminating many “winter” problems with diesel engines. At the same time, it is important not to forget to pour the correct grade of diesel fuel into the tank.

Important: similar systems are offered for injection and carburetor engines, their use can also be useful.

The device of the Webasto system:

The rest of the technique is standard: you need to let the engine run for a few minutes, and if everything is in order, you can hit the road. Some rules for warming up the engine are set out below.

Warm-up rules

Car owners have empirically deduced several rules regarding how much to warm the engine:

• at temperatures from 0 to +5 degrees, it is enough to warm the engine for 1-2 minutes. Glasses in such conditions do not have time to freeze, so there is no need to wait for the stove to reach operating temperature in order to heat the interior;
• from 0 to -10 it is worth warming up the engine for about 3 minutes. Technical fluids and engine metal will warm up to the minimum temperatures allowed for movement, but it may take more time to heat the interior;
• from -10 to -20 - it should take 3-5 minutes to warm up the engine. The windows of the car can freeze, and they should also be warmed up. Therefore, after warming up the engine, you need to turn on the stove and provide heat in the cabin to defrost the windows.

Important: do not turn on the stove at the same time as starting the engine! This will only increase the overall warm-up time.

• at temperatures below -20, it is necessary to warm the engine for 5 minutes, the specific time is determined individually, depending on the age and condition of the car. The more powerful the stove and newer machine the faster it warms up. On average, the engine heats up in about 5 minutes, the interior in 10.

After the start of the movement, it is impossible to sharply gas, “turn” the engine and give it heavy loads during the first 2-3 kilometers of the journey. Only after complete and, most importantly, uniform heating, obtained already in the direction of travel, power unit will be able to adequately perceive such actions, but if they are taken before, the metal parts that have not fully expanded after freezing will experience increased wear, the engine life will decrease.

An important note applies to other components of the machine. So, even if the engine received heating before starting to move, other elements (gearbox, steering mechanism parts, brake system) are still cold, and heat up already during operation. Cold damages the transmission, suspension, damper performance, tans rubber parts (including tires!) and seals, and all of them take some time to heat up. It is also necessary to start moving slowly and carefully for this reason - so as not to cause wear and sudden breakdown of other components of the machine.

On vehicles with before starting off, it makes sense to “warm up” the gearbox a little, switching the gearbox modes 1-2 times in turn with a delay of 2-3 seconds in each. This will help warm up. transmission oil and automatic transmission units, facilitating their further work.

• if the car is equipped with a hydraulic booster, this will disperse the power steering fluid in the system;
• in the case of an electric booster, the engine will receive additional load through the generator and warm up a little faster.

conclusions

So, the answer to the question of whether it is necessary to warm up the engine before a trip is still positive: yes, warm it up! But not for long, especially if it's modern vehicle With injection engine Long idling harms the engine no less than starting from a place “to a cold one”, and a slight warm-up with a slow and careful ride without “spinning up” to high speed will help the engine to quickly reach the optimal mode, saving the resource. It is desirable to warm up old carburetor engines longer, until they fully reach the operating temperature zone.

Turning on the stove at the same time as starting the engine in the cold is not worth it, this will significantly increase the total warm-up time. A good help to the car owner will be the engine preheating system, launched according to a schedule or remotely, by pressing a button on the key fob. It will ensure that the car is ready to drive, for example, while the driver is preparing to leave the house, thus reducing the time spent on warming up the engine.

For diesel cars be sure to use diesel fuel that is appropriate for the season.

The question of the need to warm up the engine in winter period still remains open, driving with a cold engine reduces its wear resistance. Low temperature conditions lead to thickening of the oil, which prevents its access to parts and leads to a decrease in the quality of the running gear.

Warming up the car in winter is a prerequisite if you want a long car service.

Do I need to warm up my car in winter?

Cars manufactured ten years ago need a long warm-up, and modern models vehicles are dispensed with a few minutes to improve engine performance. There are the following reasons arguing the need to warm up the engine in winter:

• the dependence of the density and useful properties of the oil on temperature regime;
• in the cold, the gaps wear out faster;
• loss of dynamics, throttle response at low temperatures;
• the possibility of increasing fuel consumption;
• reduced visibility and increased risk of accidents as a result.

Excessive density of engine oil adversely affects the life of mechanisms - when parts are lubricated worse, and the speed is high, wear resistance decreases. After warming up, the oil gains the desired consistency, restoring its beneficial properties. In this case, the engine has enough lubrication, the service life increases.

Clearances on a supercooled motor deviate from the established norm, which leads to the risk of rapid wear at high speeds. After the engine warms up, they return to normal. The instability of work is expressed in the loss of driving dynamics, the “sneezing” of the mechanism.

This nature of the movement leads to excessive fuel consumption as a reaction to the difference in the temperature of the air-fuel mixture and the environment. You are unlikely to get the pleasure of driving in a cold car, and frosted windows reduce visibility, which increases the risk of getting into an accident.

How to properly warm up the engine

If you warm up the engine incorrectly, its resource decreases. A competent approach to knowing the procedure for warming up the car will save you unnecessary trouble and extend the life of the vehicle. It will be right:

• start with the battery so that it does not lose its properties under the influence of cold - load it by turning on the high-beam headlights for 15 seconds. This time is enough to warm up the electrolyte;
• disable high beam to restore the battery within 30 seconds;
• close the radiator from the outside to speed up the process (or throw felt on top);
• start the engine;
• if the gearbox is manual, press the clutch pedal to unload the crankshaft, gearbox and hold for 2-3 minutes to warm up the oil;
• when the car does not start, we take a break for 2-3 minutes to restore the battery. It is necessary to ensure that the starter rotates no longer than 20 seconds. If the car still won't start, it's time to move on to troubleshooting;
• after the engine has started, turn on the stove to warm up the interior - the air will go first into it, and then to windshield. This will avoid the appearance of microcracks between the glass and the body;
• set off at a minimum speed (40 km/h) to allow the engine to warm up more.

After driving 5-6 kilometers of the road, the vehicle will restore its functions and will be ready for operation in normal speed mode.

Popular misconceptions

Among motorists, myths associated with warming up a car are common. Some of them are unfounded or exaggerated. Let's look at common misconceptions.

• Myth one: if you warm up the car at idle, more fuel will be consumed. Excessive fuel consumption takes place, but this is noticeable only if the car warms up for 20-30 minutes. In 2-3 minutes of warming up gasoline will be used up less, but the mechanisms will work properly.
• Myth two: warming up the engine is harmful. This is due to the formation of resin deposits on the valves. They can stall due to a loose fit to the seat, but the engine will not fail completely. In return, turbines can break if the car is not warmed up. It is more harmful to do without preheating.
• Myth three: in winter you can do without warming up the car. In fact, if you do not limit yourself to at least a slight warm-up for a period of 2 minutes, the piston machine will become unusable. The fuel will not evaporate well, and condensation will form on the mechanism, which will cause wear due to corrosion. When such condensate containing sulfur and excess water enters the engine oil, the filters will clog along with the channels.

You should not take seriously the misconceptions about warming up the car, but you can pay attention to some details.

Important Features

From how the fuel is supplied, using an injector or a carburetor, the heating scheme does not change. The engine starts the same way, but there are features that should be considered.

If the vehicle is running diesel fuel, then remember that it can be of three types - with different octane number, ignition temperature:

• summer - for temperature conditions within +1 degree and above;
• winter - used at temperatures from 0 to -30 degrees;
• arctic - used in northern latitudes.

Problems with starting the car can be the result of using summer fuel in winter.
Watch the video on how to warm up the car:

Outcome

With an on-board computer, you can easily determine the end of warm-up. In the absence of electronics and the presence of a carburetor engine, the temperature of the oil is signaled by the arrow of the temperature sensor for the coolant when it moves and the idle speed drops. The process will end when the temperature rises to 50 degrees. It is not recommended to immediately increase the speed. After warming up the coolant to 80 degrees, you can gain acceleration.

Thorough warming up of the car in winter will extend the service life by slowing down the wear of the mechanisms. It is important to warm up the engine, but you should not be too zealous either - everything needs a measure.

In the yard of the XXI century, work car engine has long been controlled by a computer that regulates the supply of fuel and ignition depending on external conditions. But most motorists did not have time to rebuild after the progress, making mistakes when warming up the engine in the cold season. The methods of starting and warming up in frost, which were relevant 20 years ago, are useless for modern engines, and sometimes even harmful.

Can't warm up

There is a widespread belief that modern car engines do not need to warm up before driving. It's a delusion. Warming up the engine is necessary, driving on a cold engine will not lead to good.

“In service cards for all types of engines and at all times there is a clear indication: warming up the engine is necessary to achieve operating clearances between parts and bring technical fluids to the given viscosity values. The engine is made of different metals, which have different indicators of temperature deformation. The design of the engine is designed for operation in a given temperature range, which is achieved by warming up the engine at idle,” says engineer Sergey Kolchin.

Running the engine without warming up can cause serious engine damage.

You can not warm the engine "by temperature"

Traditionally, Russian drivers control the warming up of a car engine according to the readings of a temperature sensor. Most modern engines internal combustion have an operating temperature of 90 degrees. But this approach is wrong. For a car enthusiast, it can turn into excessive fuel consumption for warming up and a significant loss of time.

“It is possible to warm up a car at idle to 90 degrees at a temperature of minus 20. But it will take 30-40 minutes. It is not advisable to waste fuel and time on such warming up,” says auto mechanic Vitaly Loginov.

Engine oil thickens at low temperatures. Mineral loses viscosity at a temperature of 15-20 degrees below zero, "semi-synthetics" at 25-30 degrees below zero. Thick oil adversely affects the operation of an internal combustion engine.

“The oil in the engine performs three functions at once: lubrication of rubbing surfaces, removal of wear products and cooling of moving parts. In the case of negative temperatures, the last two points are not relevant. It is not necessary to cool a cold engine, and wear in this mode is negligible. But there is not enough lubrication for the engine, because of this, the friction force increases, ”says Vitaly Loginov.

High friction forces lead to high fuel consumption. Almost all modern cars have on-board computers, which display consumption figures. Vitaly Loginov advises heating the car "according to consumption."

"A car with an engine power of up to 100 Horse power idling consumes 0.8-0.9 liters of fuel per hour. When starting a cold engine, this figure is usually 2.7-3 liters per hour. To enter the engine into operating mode, it is enough to warm it up to normal values. Waiting for warming up to 90 degrees is a waste of time and gasoline,” says Vitaly Loginov.

Do not "gas" during warm-up

Some motorists try to speed up the warming up of the car by increasing the engine speed. But you can’t “gas” with a cold engine.

“All gaps in the engine are designed for a certain oil viscosity, at low temperatures the viscosity of the lubricant increases, and it is not able to flow between the rubbing surfaces. Parts operate in oil starvation mode. Which leads to their increased wear,” says Vitaly Loginov.

Moreover, wear in this case is sharp, almost explosive. The rings on the pistons may fail, and scuffs and nicks form on the cylinder mirror, which can only be corrected during overhaul engine.

The engine must be warmed up at idle, without touching the gas pedal. In this case, the output to the operating mode will pass without consequences.

Oil heaters must not be used

Some motorists use so-called oil heaters to start the engine during the cold period. This device is a heating element that is installed in the oil dipstick hole and connected to car battery. It is assumed that this device will warm up the oil, restore its fluidity and simplify warming up. But this is just a marketing ploy. These devices do more harm than good.

“Oil heaters do not solve the problems of starting and warming up the engine in winter. The power of these devices rarely exceeds 20-30 watts, which is clearly not enough to warm up 3.5-4 liters of oil in a cold engine at a temperature of minus 20. In some cases, the temperature of the heater is so high that the oil on its surface begins to burn, while the entire volume remains cold,” says Vitaly Loginov.

Can't touch hard

There is oil not only in the engine, but also in the gearbox. It also thickens at low temperatures and processes occur in the box, similar to those in the engine. After warming up the engine, the oil in the box remains cold. Therefore, it is impossible to move sharply. Mechanics advise a smooth start and movement at a speed of no more than 10 km / h for the first 300-400 meters. This is quite enough for the oil in the box to begin to perform its functions.

Thirty years ago, the need to warm up the engine in winter was not disputed by anyone. The world was dominated by cars with a carburetor engine, for which warming up was vital. With the advent of the injector, the principle of “sat down and drove off” came into fashion among motorists. Automakers support and even promote this approach, insistently assuring technical excellence modern engines. However, there are drivers who are true to the old principles.

A bit of engine theory

The car engine, despite the scientific and technological achievements, has not fundamentally changed. So believe supporters of mandatory warming up. The engine is a set of rubbing parts, the interaction of which is impossible without lubrication. Lack and/or poor quality of oil increases friction between parts, which in extreme cases leads to jamming of mechanisms. In a running engine, oil circulates in the cylinder block through cavities, channels and tubes. After the engine stops, the oil flows into the lower part - the oil pan.

When starting the engine, oil under the pressure of a running pump is distributed over the cylinder block, but this process is uneven. The lower mechanisms, for example, the crankshaft, receive lubrication earlier, the upper zone is filled with oil after thirty seconds. But this is how the process proceeds under normal conditions. At sub-zero temperatures, the oil loses viscosity, and the lubricant circulation in the cylinder block slows down.

For quality lubrication oil must cover all engine components

Only warming up will help to compensate for this negative moment, and its duration will depend on specific temperature conditions. As the engine warms up, the oil circulation will improve, but it will reach its optimum values ​​only at operating speed when the car is moving. Therefore, a short warm-up at idle for 1-2 minutes and the start of movement in a gentle mode are considered normal practice.

Driving practice

Despite the simple theory that explains how an engine performs at start-up, in practice, motorists take very different approaches to warming up. Some start right away; others heat the car for 2–3 minutes; the third "stoker" for half an hour. At the same time, each driver, as it seems to him, has the only correct position and is ready to defend this correctness for hours.

Arguments against warming up

Opponents of warming up mainly use the following arguments:

1. The injection engine is a high-tech product. The electronic unit control immediately selects the desired mode of operation of the engine based on temperature conditions.
2. Premature wear. When the engine warms up, in the first minutes after starting, a highly enriched air-fuel mixture is supplied to the cylinders, which leads to the formation of carbon deposits on the spark plugs and pistons.
3. Additional fuel consumption for heating.
4. When the engine is idling, the toxicity of exhaust gases is higher than in motion.
5. The car manuals say nothing about the need for warming up.

Excessive emissions exhaust gases in winter, they are unlikely to please residents of large cities

Arguments for warming up

Fans of “warm up” give no less arguments:

1. Regular warm-up prolongs the life of the engine.
2. A warm car allows the driver to feel more comfortable behind the wheel.
3. Frozen glass is only thawed after prolonged heating.
4. Reduced fuel consumption while driving.
5. The gearbox warms up better.

Supporters of too zealous warming up the engine will definitely need an auto blanket

In the end, warming up the car or not is the choice of each driver. Experts advise nevertheless to take time to warm up, but do it for only 3-5 minutes. In this case, the movement must be started in a gentle mode, without loading the motor with maximum speed.

The author's personal opinion is that the car needs to be warmed up. Your portion negative factors the car will have time to get in traffic jams. AND idle warm-up within 5-10 minutes is unlikely to worsen the condition of the engine. But a well-heated car will increase driving pleasure.

In the stream of conflicting opinions, it is difficult for a Russian car owner to right choice. In a number of countries of the world, engine idling is limited by law for environmental reasons. In Russia, this is still a private issue for the motorist. But whatever choice the driver makes, it is important to remember the people who live nearby.