How to flush the cooling system. How can you flush the engine cooling system yourself? The replacement procedure is the same as using citric acid.

The importance of flushing the engine cooling system is clear. If one of the drivers does not yet understand this, then immediately change to a horse-drawn vehicle, it will definitely not overheat and will not let you down.

From the article you will learn how to flush the cooling system with water, citric acid, vinegar, caustic soda, lactic acid, whey, Coca-Cola, special auto chemistry, let's talk about mistakes that should not be made.

The consequences of improper care of the cooling system

The cooling system (CO) is an important element of any car, especially if its engine is cooled with liquid.

Its improper functioning can lead to irreparable consequences, and these are:

1. , and as a result, its complete failure;
2. Breakage or other similar device;
3. Failure of the pump;
4. Inefficient work.

As a rule, the reason is ineffective work fluid system cooling of any car lies in the contamination of the radiator, pipes, cavities of the cooling jacket of the cylinder block.

If we could get inside this system, we would see an interesting picture.

Rust, scale deposits on the walls, residues from decomposed coolant, greasy oil stains and other troubles.

It is worth noting that we are talking about engines that have been in operation for 2 years or more. We are not talking about new cars here.

When should you flush the engine cooling system?

You need to understand that any coolant (coolant), be it antifreeze or antifreeze, loses its performance over time.

The liquid decomposes into separate chemical elements, some of which precipitate and partially block the channels through which it circulates, others settle on the walls in the form of scale.

As a result, after one or two years of operation, antifreeze or antifreeze begins to take less heat from the engine per unit of time.

The period of circulation of the liquid in a circle increases and Work efficiency the entire system is reduced.

Therefore, so that you do not have problems with engine overheating on the road, flush the entire system with each new coolant change.

Which flushing method to choose

You need to understand that there are several ways to flush the engine cooling system:

1. Distilled, boiled or acidified water;
2. Washing with special means.

Depending on the degree of contamination, different ways flushing.

Determine the degree of pollution.

In this case, to obtain the maximum result, you will have to use acidified water or special means.

If the spent coolant has a more light shade than a dark one, without any obvious observation of precipitation, then you can safely use disinfected or boiled water.

Flushing the cooling system with water

Wear rubber gloves to keep your hands away from the harmful liquid. Raise the hood and open expansion tank.

Drain the old coolant from the system. To do this, unscrew the plug (bolt) on the cylinder block and open the valve on the radiator.

Return the plug (bolt) and the faucet to starting position... Do not pinch them too much.

Pour distilled or boiled water through the expansion tank according to the standard.

Start the engine. 15 - 20 minutes of its operation at reduced speed will be sufficient.

Drain the water paying attention to its condition. If the water is dirty, then repeat the procedure. Ensure that the water to be drained is clean.

Only then fill in fresh antifreeze or antifreeze.

Using acidified water

If there are particles of scale, rust, etc. in the old coolant, then we can conclude that ordinary water cannot cope with cleaning the cooling system.

You need to use more aggressive means and acidified water is suitable here.

As an oxidizing agent, you can use table vinegar, citric acid, caustic soda, or lactic acid.

The fact is that citric acid reacts only at high temperatures, 70 - 90 degrees.

It is also very important to properly prepare the solution so as not to harm rubber products and metal.

Usually, 100-120 grams of citric acid is poured into 5 liters of water, respectively, for 4 liters - 80-100 grams. If you do not want to risk it, the proportion can be reduced.

Other drivers, on the contrary, increase the proportion. But these figures are the most optimal.

The algorithm of actions is the same. We drain the old coolant and fill in the prepared solution. Next, start the engine and warm it up. Drive your car for a couple of kilometers.

This is done so that the temperature of the solution rises to the required 70 - 90 degrees and the necessary reaction occurs. The engine should run for 30 - 40 minutes.

At the final stage, flush the cooling system with distilled or boiled water to remove the remaining citric acid.

If you decide to use table vinegar, then you also need to know the correct proportion of the solution.

For example, 500 ml of vinegar is poured into 10 liters of water. The resulting solution is poured into a cooling system. Start the car and warm up the engine to operating temperatures.

After that, turn off the ignition and leave the heated solution in the engine overnight or 8 hours.

Merge, see the result. Repeat if necessary. At the end, be sure to rinse with distilled water.

In very severe cases, some drivers immediately pour 9% table vinegar without diluting. For several times, you will have to buy 20 bottles of 0.5 liters each.

If you use acetic acid, then it has 70% concentration, keep this in mind.

Caustic soda is used only for flushing removed copper radiators of the engine cooling system and radiators of the cabin stove.

If you have these devices made of aluminum, which is typical for many modern cars then forget about this option.

The engine is not washed with caustic soda, since many people know that the cylinder head is made of aluminum, and the gaskets under the head will be corroded.

If your radiator does not fit into the aluminum category, then you can use a caustic soda solution per 1 liter of distilled water, 50-60 gr. To flush it. substances. But it is advisable to remove it before flushing.

This method gives a good result, but here you also need to be able to properly prepare the solution.

But the problem is not even that, but where to get lactic acid, because it is difficult to find it on the free market.

If in your city there is an opportunity to get it, then great.

Also at specialized auto forums, especially for used cars, you can find people who sell lactic acid. In general, as they say, there would be a desire.

A 6% lactic acid solution is needed to clean the cooling system. Typically, the concentrate is 36%.

But the calculation here is simple, we make the ratio 1: 5, i.e. pour 1 kg of concentrate into 5 liters of distilled water, thus obtaining the required percentages.

1. Pour a solution of lactic acid and wait until the release of carbon dioxide stops, then drain the spent mixture;
2. Drive a few kilometers by car, then drain the dirty mixture.

Many drivers drive with lactic acid drenched for 24 hours, drain, fill again and drive again.

This can also be done, because lactic acid does not so aggressively affect aluminum and industrial rubber goods.

However, it was noticed that the engine starts to get very hot, more than usual.

This is because, escaping, carbon dioxide creates so-called air locks in the pipes and the cylinder block.

Therefore, you need to be careful and more closely monitor the readings of the instrument panel.

Remember to neutralize the acidity at the end. For this, it is better to use a 0.5% chromic solution or distilled water. The engine should run for 10-20 minutes.

Only then fill in new coolant.

Serum.

Not a bad alternative to lactic acid. First, filter the whey into a container of at least 5 liters.

Then it is poured through the expansion tank into the cooling system.

They drive 1000-1500 km with whey, then it is drained. The cycle is repeated if necessary. However, every 100-200 km of run it is recommended to check the degree of contamination of the serum.

The temperature of the engine must be constantly monitored.

Sosa-cola.

Oddly enough it sounded, but before flushing the cooling system with Coca-Cola gave a good result.

The effect was achieved due to the phosphoric acid included in the drink.

But according to rumors, now this acid is not added to Sosa-cola, so the past effect can no longer be expected.

But no one has canceled the rechecking of the rumors, it will definitely not harm the engine of Sosa-Sol.

Tools used - auto chemistry

The advantage of cooling system flushes is that they keep pace with the times.

Their composition is designed in such a way as not to harm the engine. For example, for copper radiators previously used some means, now for aluminum, others. Or combined for all types of engines.

They are inexpensive, so almost every car owner can afford to buy such a tool.

Needed to maintain normal operating temperature power unit in the course of his work. The motor is cooled by forcibly removing excessive temperature indicators from its component parts and assemblies. This ensures optimal thermal conditions. In the absence of normal cooling, the engine overheats and can receive both individual damage and complete failure. Therefore, it is important to monitor the good condition of the cooling system and timely carry out diagnostic measures and eliminate various malfunctions.

Scale build-up inside

One of the reasons when the power unit can overheat is the clogging of the system with various deposits and scale, in which the normal circulation of antifreeze is disrupted. A variety of techniques and tools for flushing the engine cooling system reduce the risk of this problem.

Often the radiator, the stove, various nozzles and the crankcase jacket itself are subject to the influence of scale.

During long-term operation of the car, within two years, salt deposits, rust, scale and decay products of the used antifreeze are formed on the inner walls of the system elements.

When to rinse?

Before flushing the SOD, it is important to determine the degree of contamination and make sure it is necessary to carry out this process... It is recommended to clean the POD of the motor approximately once every two years or when the operating temperature is power plant exceeds the optimal value.

Regardless of what quality antifreeze or antifreeze is used as a coolant, all the same, after a certain period of time, they lose their physical and chemical characteristics- the liquid decomposes into separate groups of chemical constituents.

In this case, one group settles on the walls of the cavities of the system in the form of a deposit, and other components pass into the sediment, thereby partially blocking the channels.

The presence of scale interferes with the normal heat transfer process, and various plugs from debris do not allow the liquid to fully circulate through the system. As a result, the efficiency is significantly reduced. So to speak, folk and special means for flushing the engine cooling system do an excellent job with various sedimentary formations. They are often used to restore the functionality of all system elements.

Engine flushing methods

There are several options depending on the degree of contamination:

• With the use of distilled water, boiled and with the addition of acid.
• Using special liquid for flushing the engine cooling system.

Correctly selected agent and method affects the quality of cleaning and removal of sediments and blockages from SOD.

Determination of the degree of clogging

The degree of clogging can be determined by the quality of the coolant. To do this, it is drained from the engine.

When antifreeze is dark brown, rusty elements and grease stains, the engine is heavily contaminated.

In this situation, in order for the cleaning to be positive, it is necessary to use water with the addition of acids or specialized industrial products for flushing the engine cooling system.

If the drained coolant has a light shade, without clear signs a variety of precipitation and turbidity, then in this case it is enough just to flush the system with boiled water or distilled water.

Flushing with water

It is worth noting that it is necessary to carry out the process of replacing the coolant and flushing the cooling system on a cold engine, using personal protective equipment. The first step is to remove the cover from the coolant expansion tank. Then we unscrew the bolts for draining the fluid from the system, which are located in the engine crankcase and in the radiator and wait until the antifreeze is completely merged. We tighten the bolts back and pour ordinary boiled or distilled water into the machine. We start the engine and leave it to run on low revs for fifteen to twenty minutes.

After that, the water must be drained. If it is dirty, the procedure should be repeated until the moment when it is not clean. Only then can a new coolant be added to the engine.

Removing the blockage with acids

When there are small scale elements in the waste liquid, then it is advisable to use a more effective means for flushing, namely water with the addition of acids to it. As an additive, you can use ordinary vinegar and lemon, milk or caustic.

Flushing the engine cooling system with citric acid

The effectiveness of this method depends on the percentage of acid in the water, as well as on the presence of a certain engine temperature. Its optimal effect on deposits occurs at temperatures from sixty to ninety degrees.

The flushing method is the same as when using ordinary water, but with one caveat - this fluid for flushing the engine cooling system must have high fever... Therefore, after it has been poured into the engine, you need to warm it up to operating temperature.

Washing in this way is carried out for half an hour, and if necessary, repeat the process. After that, the system must be flushed with ordinary distilled water.

Using vinegar

When using table vinegar as a washing material, the proportions should also be observed when preparing the solution. It is usually recommended to add half a liter of nine percent vinegar to ten liters of water. Next, the prepared mixture is poured into the cooling system, the engine is warmed up to operating temperature and turned off. After that, you need to put the car idle for about eight to ten hours. After draining the rinsing, we determine the result, and, if necessary, repeat the operation. At the end of the work, the engine must be flushed with distilled water.

Caustic soda

This type of engine cooling system flush is mainly used for cleaning radiators and stove. It should be noted that caustic can only be used on parts made of copper or brass; it is not recommended to wash aluminum radiators with caustic soda. Also, this cleaning material is not used to clean the cooling jacket of the unit.

The caustic solution is made as follows - fifty grams of caustic soda are added to one liter of distilled water. Before necessarily dismantled from the car.

Milk serum

Serum is an excellent flush for the engine cooling system. Reviews experienced drivers- direct confirmation of this fact. Due to its chemical properties and components, it easily dissolves fossilized scale and sediment, at the same time does not expose various rubber CO components to aggressive effects.

Before use, strain it through a fine sieve. Next, it is poured into the engine and used as the main cooling liquid for approximately one thousand kilometers. vehicle... With this method of flushing, the condition of the serum should be periodically checked and monitored working temperature power unit.

Flushing the engine cooling system with Coca-Cola

Due to the fact that this drink contains cola, it is excellent as a flushing material. But it also has its drawbacks. Firstly, this is the presence of a large amount of sugar in the drink, which, in turn, can remain in the system and re-clog it. Therefore, after using cola, it is necessary to re-rinse the SOD with water.

The second drawback is the high concentration of carbon dioxide, which is released when this "wash" is heated. To prevent damage to the components of the system when using cola, it is recommended to remove gases from it.

Chemicals

Often, motorists are faced with a problem: how to flush CO - by folk methods or still using certified products? As a rule, all kinds of flushing “substitutes” may not give the desired result, especially when it comes to a used car. In such cases, it is advisable to use special factory washes, the so-called seven minutes. They got this name due to the short time spent on the descaling operation. The composition of chemical cleaners includes components that do an excellent job of their task, thereby not harming the power plant.

One of these washes is the product of the Hi-Gear trademark. Flushing the cooling system of the Hi-Gear engine will give the desired result and in just a few minutes. So, with the use of this tool, the normal circulation of the cooling liquid through the pipes and the radiator is restored. The possibility of overheating of the motor during idle time in traffic jams is excluded. Prevents rubber parts of the system from destruction due to highly active components of the drug.

The flush does not contain aggressive acids, and after its use it is not necessary to flush the SOD again. In addition, one package may be enough for several procedures. This drug is added to the water that is poured into the engine, and in just seven minutes, the engine cooling system is flushed. The price of flushing material is quite affordable and is about one hundred rubles. Moreover, the cleaning itself can be carried out independently - at no extra cost.

Regardless of the model and brand of the machine, the process of removing deposits and scale in the cleaning and cleaning system is almost the same.

Flushing the VAZ engine cooling system is carried out in the same way as on imported cars, with only one difference: due to the simplicity of the design of the power unit, the process is less laborious and costly.

Summarize

Based on the above, it can be noted that cooling from blockages is not that difficult. The main thing in this case is to observe safety precautions, use rinsing agents wisely, the same applies to the correct preparation of solutions. When using a factory-made engine cooling system flushing fluid, it is important to familiarize yourself well with the instructions for its use and purpose.

So, we figured out which products for flushing the engine cooling system are best suited.

According to popular beliefs, Epiphany water retains its properties for a long time and does not deteriorate, while ordinary water releases a white sediment after a few days. Unfortunately, car antifreeze does not differ in durability, because the environment for it is quite aggressive.

Therefore, sooner or later, the time comes to completely replace the coolant (coolant). Before doing this, it is better to flush the entire cooling volume. What cleaning agents ("cleaners") are most suitable for flushing the engine cooling system, you will learn from this article.

"Normal heroes always go around"

It is enough to go to any autoshop or kiosk of related products at the service station to make sure that there are all kinds of drugs intended for decomposition, splitting, dispersion of solid and jelly-like deposits formed inside the engine cooling system (SOD), with their subsequent removal. You can entrust this simple, but rather dirty procedure to car service workers.

However, the domestic car enthusiast is used to going his own way. Rightly believing that the basis of all internal layers are mineral (scale, rust) and organic substances (fats, oils, dirt), he uses various household and folk remedies... Here are some of them:

• acetic acid or essence;
• diluted citric, lactic or hydrochloric acids;
• milk serum;
• solutions of caustic or baking soda;
• toilet bowl cleaner "Duckling";
• youth drink "Coca-Cola".

The last two names are the pinnacle of flushing life hacking. In order not to provoke the reader to use the above "cleaners", those interested can find their recipe in other sources.

The use of products that are not intended for servicing the car should be considered a compulsory measure. Nobody guarantees the result from their use.

Composition of auto chemistry products

The most effective method for cleaning SOD is the use of special chemical liquids on an acidic or alkaline basis. Acids dissolve solid mechanical components (lime deposits and corrosion products), and alkalis dissolve the organic component (fat and oil deposits). In this case, the simultaneous combination of alkali and acid in the cleaning product is impossible, since they neutralize each other.

In addition, these chemicals are aggressive towards rubber and plastic, which requires additional neutralization after their application, followed by flushing of the entire system. Therefore, compositions on a purely acidic or alkaline basis are extremely rare on the market.

Most often, preparations for washing SOD are two-component - they include a separate bottle of acid and alkaline cleaner in the kit. Sometimes a neutralizing flushing component is added to them.

Neutral cleaners are among the most expensive products. While successfully removing various types of contaminants, both fatty and mineral deposits, they at the same time do not have a negative effect on the non-metallic elements of SOD. They are used not only for major cleaning of the system, but also for preventive purposes during the next coolant change. Neutral formulations include:

• active substances for complex cleaning of contaminants;
• dispersing additives that exclude the possibility of re-adhesion of washed particles to the surrounding surface;
• protective agents for plastic and rubber against the effects of acids and alkalis;
• anti-corrosion components.

Choosing a drug

Before purchasing a flushing agent, it is necessary to determine the prevailing nature of the contamination of the coolant. When inorganic constituents (scale, products of corrosion and metal oxidation) prevail, a white precipitate with a tinge of rust is observed under the cap of the radiator tank or expander. For such a case, choose an acidic cleaner based on phosphoric acid or its phosphates.

Organic impurities (decomposition products of antifreeze, oil, dirt) give out a cloudy color of antifreeze. To remove them, you must use an alkaline type detergent. Along with the main elements: surfactants (surfactants), a regulator of the acid-base balance of pH, the drug should contain complexing additives that promote intensive dissolution and removal of mud residues.

It is good when the composition contains anti-corrosion inhibitors that protect parts made of metal. Finally, deionized water must be used for water-based washes, and the packaging must indicate this. Ordinary water contains salts that cause lime formation.

Advice: when choosing a certain agent for flushing the cooling system, take into account the condition of the radiator, other devices and the fluid to be replaced.

What to look for when buying

When choosing a liquid in the store for the upcoming flushing of the engine cooling system, you should pay Special attention the following questions:

• Product cost. The temptingly low price tag is most likely a consequence of the manufacturer's savings on active ingredients.
• Content volume. The optimal packing capacity is 0.3 - 0.5 liters. Moreover, the higher the density of the composition, the more active-useful substances it contains. Therefore, from washings of the same volume, heavier ones are preferable.
• The duration of the cleaning action. Too short a washing period (2 to 5 minutes) should be alarming. Perhaps this is a flawed promise, and the system will not be flushed enough, which will devalue wasted time and money. It is possible that the composition is too aggressive and can damage some parts. You can check the second assumption by immersing a piece of aluminum in the wash. The appearance of bubbles indicates excessive chemical activity of the solution. In this case, the instruction should contain an indication of the need to rinse the SOD with water at the end of the procedure.
• Presence of sediment at the bottom of the bottle. At normal temperature, the consistency of the solution should be homogeneous, without any discharge. Otherwise, they can appear inside the cooling circuit.
• A good product should not foam after shaking. Its presence in the system after draining the detergent will lead to the ingress of a certain amount of the cleaner into the freshly poured cooling antifreeze, which will worsen its properties.

Review of some brands

Wynn's Cooling System Flush

Powerful Belgian-made acid-free cleaner. In addition to rust and scale, it dissolves oil emissions, dirt, does not affect rubber elements and metal parts. It has the most effective effect when washing out old deposits. The capacity of the jar is 325 ml, the price is from 250 to 300 rubles.

Bardahl Cooling System Fast Flush

French quick flush acts on different types the resulting residues: scale, oxidation products, salt formation and colloidal compositions. The ingredients of the flushing fluid loosen the deposited formations by breaking molecular bonds. Flushing is recommended for all types of coolant: C, D, as well as universal and special. The capacity of the can is 0.5 liters, the drug costs about 450 rubles.

LIQUI MOLY Kuhler Reiniger

This cooling system cleaner represents Russian market German products. Due to the absence of aggressive acids and alkalis, the product does not have a destructive effect on plastic and rubber elements. average price jars of 0.3 liters - around 485 rubles.

HI GEAR 7 minutes Radiator Flush

Thanks to its concentrated formula, the American drug removes all possible consequences vital functions of SOD: rust, scale, grease, working off antifreeze even in a neglected situation. The absence of acids makes it possible to do without neutralization. The product is compatible with common materials used by all global car manufacturers. A metal can with a capacity of 325 ml costs 350 - 500 rubles.

LAVR Radiator Flush 2 in 1

Two-piece set Russian production... Consists of separate acidic and alkaline solvents. Composition No. 1 on an acid basis dissolves lime formations and oxides, and special elements ensure the maintenance of the latter in a dispersed state. A novelty are protective components that create a buffer phosphate film that protects parts of the cooling system from acid attack.

Alkaline composition No. 2 dissolves organic emissions and neutralizes the effects of acidic environment. Experts recognize this drug as the safest, and its use for the purification of especially neglected SOD is the most effective. With a capacity of each spray can of 0.33 liters, the set costs about 525 rubles.

Flushing the cooling system is not necessary occasionally. This procedure is recommended to be performed at the next coolant replacement or every two years.

So, if you want your engine to always be clean, not overheat and be agile, replacing the coolant should be given the same attention as replacing engine oil... In order for the antifreeze to retain its qualities longer, before pouring in a fresh portion, it is necessary to flush the engine cooling system from residues old liquid. The best remedy for this procedure are special factory-made rinsing preparations.

To prevent the engine cooling system from failing ahead of time, it is necessary to carry out preventive work. Such prevention is flushing the system in order to clean it of scale, sand, dirt and other harmful deposits that accumulate on the radiator grill, inside the pipes, thereby reducing their diameter. If you do not clean the cooling system in a timely manner, you may soon encounter the following unpleasant consequences:

• , up to the complete cessation of work;
• the antifreeze heater may malfunction;
• the water pump may fail;
• the stove in the car will start to work poorly.

When should the cooling system be flushed?

It is recommended to flush the cooling system at least once a year. It is permissible to do this procedure with your own hands - there is no special science here. See below the video "Flushing the cooling system on Renault Logan, Sandero"

How to rinse?

To flush the cooling system of a car, in a home garage, car owners like to use citric acid and table vinegar (not essence!).

It can be washed with normal cool water only if the degree of contamination is low, if there are no traces of scale and rust. You need to understand that pure water, without the addition of an acidic medium, is capable of removing only ordinary dirt and sand. But if acid is added to the water, then such a solution is capable of corroding rust and scale and cleaning the walls of parts from them.

Thus, how to flush the car's cooling system will depend on how dirty the system is.

Determine the degree of pollution of the cooling system

You need to drain the coolant and see what color it is and if it contains rust particles. If the liquid is dark, it means that the contamination is significant, and you need to use acid - citric or acetic acid for flushing. You can buy a special flushing agent.

If the drained antifreeze or antifreeze is light, without sediment, then you can rinse with pre-boiled and cooled water.

Flushing the car's cooling system with water

Prepare the water to flush the system by bringing it to a boil and letting it cool to room temperature. You can use distilled water instead of boiled water. Pre-wear rubber gloves to protect your hands from contact with the poisonous liquid.

1. Drain the antifreeze, how to do it, in detail.
2. Pour water into the expansion tank according to the normal rate.
3. Start the engine and let it run for 20 minutes at idle.
4. Drain the water and observe the color. If the water is cloudy and dirty, then a second flush is required. Flush the system until the water is clear.
5. Fill with new coolant.

Flushing the cooling system with acid

As already mentioned, if there is a sediment in the drained antifreeze (antifreeze), the system should be flushed with water with the addition of acetic or citric acid.

LEMON ACID

1. Prepare a solution at the rate of 100 g of acid - for 5 liters of water, this is the optimal proportion.
2. Drain the antifreeze (see the link above for how to do this).
3. Pour the citric acid solution into the expansion tank.
4. Allow the engine to warm up and drive approximately 2 km. During this time, the solution will warm up to a temperature of 70 ° C, at least, and a reaction will begin to break down rust and scale. The engine must run for at least half an hour.
5. Drain the solution. If necessary, you can do a second rinsing - with a solution with a lower concentration of citric acid than the first time.
6. After rinsing with an acidic solution, fill into the tank plain water and rinse the parts of the cooling system with it to completely remove traces of acid from them.

TABLE VINEGAR

1. Prepare a solution at the rate of half a liter of table vinegar (9%) - for 10 liters of water.
2. Drain the antifreeze and pour the solution into the tank.
3. Warm up the engine to operating temperature.
4. Switch off the engine and leave the car, with the solution poured into it, to stand - at least for 8 hours, or it is possible for the whole night.
5. Drain the solution. If necessary, you can do a second flush.
6. Finally, after draining the vinegar solution, flush the engine cooling system with cool water.

After rinsing

After flushing is complete, when you have already filled in new coolant, it may be that there is still air in the car's cooling system. Read and watch the video separately. After removing air bubbles, it remains only to add antifreeze to the desired level.

Video: Flushing the cooling system on Renault Logan, Sandero

If the video does not show, please refresh the page or

For proper operation of the power unit, it is necessary to ensure the normal thermal mode of operation. For this, water cooling of the motor is provided. During its normal operation, it does not overheat and does not overcool, and if it becomes clogged, it is necessary to flush the engine cooling system.
Water or antifreeze is used as a coolant for circulation in the car.

If you are using plain water, then during operation, scale or salt deposits may form on the walls of the radiator or on the crankcase.

Mud deposits in the system engine cooling

When using antifreeze, salt deposits are not observed, but with prolonged use, it can decompose and form various deposits in the lines.
Cleaning should be carried out if there are interruptions in the observance of the temperature regime of the car or periodically, for preventive purposes. (at least once every two to three years)

Cleaning methods

There are several ways to clean:

Special chemicals

There are also many different things for cleansing. special means... All of them are subdivided into several types according to their chemical composition:

System check

After flushing the engine cooling system in any of the ways, you should run in the engine and determine how the machine works - better than before flushing the sludge itself. If you are not satisfied with the result, then the procedure can be repeated, possibly in another way. It is also necessary to diagnose the cooling for possible leaks. It should also be borne in mind that the cause of malfunction may also be formed airlock, so when filling with coolant, you must ensure that there is no air in the system.