Is it necessary to use engine flushing oil?

Often, a vehicle owner is faced with the task of cleaning the power unit before replacing the lubricant. Most often, this is required when purchasing used equipment, when it is not clear under what conditions the car was operated, what condition the engine is in, and what kind of oil was filled previously. However, engine flushing is also required for cars with high mileage, when switching to another type of engine lubricant, when low-quality fuel gets into the engine, and in some other cases. Several methods can be used for cleaning.

Reasons for engine slagging

Contamination and deposits form on the surfaces of parts for the following reasons:

• high operating temperature
  . Carbon deposits most often form on surfaces heated above +400 °C. At this temperature, motor oils lose some properties;
• contact of lubricant with gases
  . When engine oil components interact with air and fuel combustion products, carbon deposits are formed. This is typical for lubricants of any type and quality class;
• use of motor oils of different brands
  . Manufacturing companies use different types of additives. The components of the oils may be incompatible, or one additive will wash away the other. Deposits inevitably appear on the engine walls. The same effect is observed when adding oil from another manufacturer to an already working lubricant.

Any of the above reasons is sufficient for coking of the internal combustion engine. In the absence of quality maintenance, oil disrupts the flow of pipelines in the system. Even when the used lubricant is completely drained, a small part of it remains and reacts with fresh fluid. New oil deteriorates immediately after filling. The owner operates the machine, confident that the lubricant is performing its functions. In fact, all this time, oil with partially lost characteristics due to a mixture with waste residues pollutes the engine.

Flushing fluids on the Russian market

Lukoil

How to choose the best one among a wide variety of flushing oils? Among domestic products, inexpensive and effective, the leading position is occupied by Russian Lukoil flushing compounds. They have very good solvent and cleaning properties. Dispersing additives in the wash composition allow you to keep solid particles of varnish deposits, carbon deposits, as well as fuel combustion products in suspension. They do not precipitate, but are retained by the oil filter.

The basic composition of the cleaning fluid is highly purified mineral oil. A package of specially selected additives allows you to remove almost any deposits from the engine. The volume of canisters with cleaning composition is 4 liters, the cost is low.

Shell

The cleansing oil from this world famous manufacturer performs its functions perfectly. It is based on organic solvents that perform excellent engine cleaning functions. At the same time, the flushing lubricant acts selectively and delicately, without affecting the rubber parts of the engine - oil seals, gaskets, and other elements.

The downside is the rather high price of the product. But at the same time, the quality of his work is at the highest level. Removes everything - carbon deposits, varnish deposits, sludge and dirt.

TNK

Another flushing liquid of Russian origin shows very good results. This cleaner also works gently, cleaning both new and old engines well. Its peculiarity is that it does not clean deposits that have crystallized in microcracks in motors, including parts with an elastic base (the same seals).

Cleans gasoline and diesel power units well. The base is mineral oil. Antioxidant qualities are at a decent level. Available in 3.5 liter containers. The cost is relatively low.

Types of flushing oil and fluids

Long-term exposure

. After draining the used lubricant, flushing oil is poured into the engine, and the car must drive several kilometers on it. After this, the liquid is removed and conventional motor synthetics (semi-synthetics) are filled in. Long-term exposure rinses have their disadvantages. It is necessary to come to the service twice with an interval of several days. Due to insufficient film, you cannot drive at high speeds. Prolonged contact with active components destroys seals.

Short term exposure

. These are relatively new compositions, which are called “five-minute”. The flushing liquid is poured into the engine and started at idle for about 10–15 minutes. The concentration of active ingredients in such products is increased. There are basically two types of short-term exposure liquids:

• flushing oils, which are usually packaged in large cans and poured into the engine after draining the used lubricant;
• flushing fluids that are added to old oil in a small volume.

In both cases, the product runs in the engine for about 15 minutes, and then it is drained. Five-minute oils are no less effective than long-term oils, and contain chemical components that protect the rubber from destruction while it is cleaned with a highly concentrated composition.

In what situations is it necessary to use flushing oil?

Very often, car enthusiasts argue about whether flushing oil is needed when changing the oil. Some believe that this procedure does not bring any benefit and does not affect the wear of the engine in any way, but on the contrary, it only brings harm. Others are sure that flushing is indispensable and must be performed every time the MM is replaced. In the first case, there is only a grain of truth, since flushing oil cannot damage the engine, so such “opponents” most likely mean aggressive five-minute fluids. On the other hand, washing the engine is not always justified.

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First of all, it is worth saying that all motor oils contain various additives that have detergent, extreme pressure, antioxidant and other properties. If the vehicle is operated correctly and only high-quality gasoline is poured, then no deposits should remain on the engine parts. However, where is the guarantee that the gas station you visit every day sells only high-quality petroleum products?

If we talk about when flushing is definitely not needed, then you can safely do without this operation if you:

• purchased a completely new car;
• you have never poured cheap oil into your engine or are completely confident in the quality of the fluid you constantly use;
• You completely trust the quality of fuel at the gas station.

If we talk about when to use flushing oil for a diesel or gasoline engine, then everything is obvious:

• when purchasing a used car;
• with frequent changes of different gas stations;
• if antifreeze gets into the engine;
• after mixing different lubricating fluids;
• when switching to another MM classification (for example, from SAE to API).

The washing process itself does not differ in any particularities, so you can do it yourself.

When flushing is necessary

It is not necessary to flush the engine every time you change the oil. If the owner observes maintenance schedules, maintains the car in reliable service centers, and uses high-quality materials, then the rate of formation of soot and deposits is reduced to a minimum. It is necessary to use flushing oil or liquid in the following cases:

• It is planned to change the brand of lubricant
  . It is impossible to predict how compatible the old lubricant will be with the new one. It is recommended to flush the engine to prevent unwanted reactions in the engine;
• It is planned to replace the oil with a composition with a different viscosity
  . For example, the owner decides to switch from semi-synthetics to synthetics. It is necessary to flush the engine even when using lubricants from the same manufacturer, since the old material will accelerate the oxidation of the new one and significantly reduce its service life;
• The internal combustion engine was overhauled
  . Flushing fluid or oil will clean the internal parts of the engine from dust, dirt, and traces of fuel and lubricants;
• foreign substances have entered the motor
  . Flushing will help remove traces of coolant and fuel, and prevent serious damage;
• I bought a car with high mileage
  . Flushing the engine will not hurt if the machine has an impressive service life and there is no data on its service;
• in emergency circumstances
  . Sometimes, after an oil change and a short mileage, car owners have doubts about the quality of the lubricant or its origin. In this case, drain the liquid and wash the engine.

The process of cleaning internal elements is usually combined with replacing filters. Experts recommend buying two oil cartridges: one is used for flushing, and the second is used before adding fresh lubricant.

The best manufacturers of flushing oils

When choosing specialized flushing oil, it is better to give preference to manufacturers who are responsible for the quality of their product. Today there are several companies that car enthusiasts distinguish from the rest.

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Lukoil

This company is a manufacturer of high quality oil. An image of a package with this oil is shown above. Lukoil engine flushing oil has excellent properties, including:

• dispersing;
• good solubility;
• excellent cleaning properties.

As a base, Lukoil auto flushing oil contains mineral liquid, as well as a special package of detergents, thanks to which it is possible to quickly clean the engine of deposits of any type and complexity.

Lukoil oil is sold in 4-liter cans, costing about 300 rubles.

TNK

TNK flushing oil is a universal liquid with excellent properties. The versatility of the product lies in the fact that it can be used both for new engines and for old or diesel engines. The fact is that the TNK fluid does not affect crystallized deposits, due to which numerous microcracks (which abound in “old” engines) do not open. In addition, mineral-based liquid prevents oxidative processes.

If you operated the car in extreme conditions, violated the engine oil change schedule, or mixed several different compositions, then it is best to use flushing fluid from TNK. It is sold in 3.5 liter containers and costs from 200 to 500 rubles.

Shell Helix

Shell offers car owners flushing oil made from organic solvents. This pleasure is not cheap, since for a small bottle of 0.5 liters of washing you will have to pay about 370 rubles. But such a relatively high price is due to the excellent properties of the liquid. Shell flushing oil effectively, quickly and gently cleanses from carbon deposits, sediment and dirt. In this case, the rubber elements of the engine are not damaged.

Rosneft

Rosneft flushing oil, like other analogues, is made on a mineral basis with the addition of detergent additives that are highly effective, gently and quickly cleaning the car engine. Used for all types of motors and allows you to get rid of serious contaminants. It is produced in 4-liter containers and costs around 490 rubles.

MPA-2

Flushing oil MPA-2 also showed its best performance. Like all the liquids described above, MPA-2 provides effective engine care and allows you to quickly get rid of toxins, carbon deposits and other harmful formations. Sold in cans of various sizes. The cost of the liquid is about 300 rubles per 4 liters.

When flushing is not necessary

In some situations, the use of flushing oil or fluid will not only be useless, but also dangerous for engine components.

The procedure is not recommended if:

• The engine is extremely dirty
  . Chemical cleaning can lead to the formation of viscous compounds that completely clog the filters and channels of the system. Heavily contaminated internal combustion engines are first disassembled, cleaned manually and only then washed;
• bought a new car
  . There is no need to wash cars without mileage. This is a waste of money;
• The car undergoes regular maintenance
  . Timely replacement of oil and filters, use of original materials recommended by the manufacturer reduces the risk of engine contamination;
• High-quality oil
  from the same manufacturer is regularly poured into the car. As a rule, such materials already contain detergent additives.

In any case, the need for cleaning is determined by a specialist. It takes into account not only maintenance data, mileage, engine condition, but also the characteristics of used oil. If there is little carbon deposits, but the lubricant is thick, it is better to flush the internal combustion engine. It is impossible to completely drain viscous oil without liquid.

Characteristics of flushing oil MPA 2

This product is a completely mineral product with a set of detergent additives with excellent characteristics. Thanks to its optimally selected consistency and viscosity, it penetrates into the most inaccessible engine components, cleans them, preparing them for filling with new engine oil.

After removing the remnants of the old product, oxidation of the newly added oil is completely prevented. This increases the service interval and the overall service life of the vehicle.

MPA-2 flushing oil does not harm the car engine.

In addition to removing harmful deposits that arise during engine operation, the use of MPA-2 flushing oil allows you to avoid engine overheating during further operation and excessive wear of rubbing parts and components.

MPA grade washing was developed in Elektrogorsk back in the 80s of the last century. At first, MPA 1 oil appeared, which was developed for the railway industry. Further developments have already been carried out for the automotive industry. This is how the MPA 2 car wash appeared.

Now the main manufacturer of MPA 2 flushing oil is the Pushkin plant. The practice of using such oils for engine maintenance has become widely used with the development of the automotive industry. Domestic products, including MPA 2, are quite justified when servicing both Russian and imported cars.

Flushing is suitable for frequent use and does not harm the engine due to the use of fairly gentle active ingredients.

The use of engine flush is especially worthwhile if you are planning to switch from mineral motor oil to synthetic or semi-synthetic.

Special Recommendations

• When using short-term remedies, do not press on the gas pedal. The lubricating properties of flushing oil and liquid are very low, so internal components of the motor can be damaged.
• Monitor the lubricant pressure. It may be necessary to add fluid beyond the specified volume. Oil starvation is especially dangerous when flushing supercharged and diesel engines.
• Follow the recommendations of the specialty fluid manufacturers. Do not exceed the specified period of exposure of engine parts to flushing oil.
• Proceed with flushing only after the internal combustion engine has been inspected by a specialist and thoroughly diagnosed.

Should I flush the engine?

Repair and restoration components renew cylinder walls and other friction zones, so oil stops entering the combustion chamber, and the life of the exhaust gas catalyst is extended.

• Formation of a protective layer of metal ceramics. This layer has a beneficial effect on the resource of the internal combustion engine.

• Washing out insoluble oxides present in the oil.

• Diagnostics of valve caps and oil scraper rings. If after 300 km the smoke and oil consumption remain the same, they will have to be changed.

Engine flushing is a preventative procedure. We recommend using it in 6 cases:

1) There is a foreign substance in the drained oil.

2) Serious contamination was found under the cylinder head cover.

3) Switching to a new type or brand of oil.

4) Buying a used car, the maintenance of which in the past remains a mystery to you.

5) Ultra-intensive operation: it makes sense to both use flushing and shorten the service interval.

6) Maintenance of turbo engines, which are especially sensitive to the purity and quality of the working fluid.

Possible consequences

Flushing oils and liquids are safe for engine parts if the manufacturer's instructions are strictly followed. There are times when, after cleaning, the internal combustion engine leaks. This is explained by the fact that the liquid dissolves and washes away the sludge accumulated in the microcracks of the seals and gaskets. During the coking process, it plays the role of a sealant. If oil leaks, it is worth replacing the seals. Disastrous consequences occur when using flushing products of dubious manufacture, cheap analogues of original fluids. In such materials the amount of anti-wear, detergent, and extreme pressure additives is minimal. As soon as the engine is started for flushing, scuff marks may appear on the surfaces of internal engine parts.

Auto chemicals for engine cleaning

The flushing liquid consists of standard mineral water or synthetics, which includes detergent additives to create a stable solution of sludge and remove it from the internal combustion engine. The process of cleaning a gasoline or diesel engine by flushing:

• thorough drainage of waste, which is usually black in color;
• flushing liquid is poured into the internal combustion engine;
• Let the engine run at idle for a few minutes (strictly according to the washing instructions). High speeds are strictly prohibited;
• the flushing oil is thoroughly drained;
• the oil filter is changed;
• fresh engine oil is added.

The most effective procedure for cleaning the engine from plaque and deposits is flushing with high-quality motor oil, which already contains numerous detergent additives. The process continues until a clear liquid appears on the drain. This procedure is very effective, but it will not be cheap, since the entire process will require 3 filters and 12–15 liters of motor fluid. For a relatively new motor, you can get by with gentle cleaning with flushing liquid, as well as periodic replacement of the filter element.

There are times when, as a result of thorough flushing, the engine leaks. Often this problem can be explained very simply - the flushing liquid washes away the sludge accumulated in the microcracks of the gaskets and oil seals of the engine. Before the procedure, particles of sludge accumulated in the cracks for a long time as a sealant.

It is very important that the flushing oil is not counterfeit. What are the dangers of cleaning the engine with such a flush? The amount of extreme pressure and anti-wear additives in motor oil is rapidly falling to dangerous levels. As soon as the engine starts operating in such a liquid, the crank mechanism bearings are at risk of scuffing. If we take into account a dirty oil filter, all the debris from the used oil particles enters directly into the oil line without filtration. How to choose a wash? Well-known flushing oils are Lukoil, ENEOS FLUSH, ZIC FLUSH, Lakiris, TNK Promo Express.

How to choose flushing oil or liquid

When purchasing material, pay attention to the following characteristics:

• application area
  . The packaging indicates for which engines a specific composition is recommended;
• mode of application
  . Follow the dosage, exposure time, and washing frequency recommended by the manufacturer.

Trust only reliable manufacturers of flushing fluids and oils. This guarantees high quality and effectiveness of the product.

Additives as first aid for the engine

An option for flushing oil are various five-minute additives, which are designed to restore the cleaning properties of used motor oil. For this purpose, additives are added to the burnout, and then the engine is started at idle for about 5 minutes. After draining the waste, the filter must be replaced and fresh motor power must be added. Such “five-minute” cleaners clean dirt from the walls of the engine very well, but they cannot remove sludge. Why? In order for the sludge particles to be washed out of the oil line and into the oil, a purified flushing fluid is needed. Used motor fluid is already oversaturated with dirt and is incapable of dissolving debris on the walls of the internal combustion engine. When working with additives, you must strictly follow the instructions, since they contain quite aggressive chemicals. If you make the engine run for more than the specified time, you will have to change not only the oil, but also the seals. Thus, the additives are intended for very dirty engines. How can a car enthusiast choose a high-quality and effective additive correctly? Such ICE cleaning products are produced by many companies, but additives from the Motul and Liqui Moly brands are especially famous.

Not all additives are equally effective

When the engine needs treatment

In what situations does it become necessary to flush a diesel or gasoline engine:

1. Buying a used car with a high mileage. Typically, such vehicles have unclear previous operating conditions, and the engine contains debris in the form of particles of used motor fluid. To effectively and at the same time carefully wash the engine, a step transition is used. After filling the flushing oil, the internal combustion engine should run for no more than half an hour. Drain it and pour in good quality mineral water, chemically suitable for your engine according to API and SAE. After 1000–2000 km, the time will come to replace the engine fluid with a high-quality product several times. If the oil seals sweat or oil consumption increases, you will have to tinker with replacing the oil seals, repairing the engine, or going back a step.
2. Do you want to switch from mineral water to semi-synthetic or synthetic water? In this case, flushing the engine is simply necessary to prevent the more purified oil from washing out mineral deposits and clogging the oil filter and channels.
3. Using only one type of engine oil from one brand eliminates the need for flushing between changes. If you are switching your car to another brand of oil, your engine will need a flush. The use of semi-synthetics or synthetics from different manufacturers forces you to flush the engine every 3-4 shifts. After flushing the engine, you should change the oil filter the first time after 2000 km, the second time after 6000–8000 km. Now the period for changing the filter for your car is reduced by 2000–4000 km. If your engine runs only on mineral oil, flushing should be done every shift.
4. In emergency situations, when there is suspicion of fake motor fluid of unknown origin or several types of oils have been mixed.
5. When you want to transfer the internal combustion engine to work with a higher class of oil of any classification. This situation is observed at the end of autumn - many motorists switch their cars from mineral water to semi-synthetic.

Use only proven automotive oils

Flushing oils and liquids of Sintec Lubricants JSC

Our company develops, produces and sells materials on favorable terms. High quality products are guaranteed and confirmed by certificates. We have our own research laboratory with analytical equipment, with which we test flushing oils and fluids for compliance with current standards. Our products have many advantages:

• high extreme pressure and anti-wear properties;
• effective dissolution of deposits, soot, and mechanical impurities of various types;
• compatibility with materials of oil seals and seals;
• protection of internal engine elements during the flushing process;
• increasing the service life of motors;
• no negative impact of flushing residues on the properties of the lubricant.

For questions regarding the supply of flushing oils and liquids, call the phone number listed on the website. We will prepare an individual commercial offer for you.

Basic qualities

Flushing oil is an oil product with certain physical and chemical properties, with the help of which the engine is washed from old oil and all kinds of deposits. Whatever oil is poured into your car’s engine, after a while it begins to lose its lubricating properties. This means that all internal parts begin to receive increased load due to friction.

In addition, various products of engine operation and crumbs formed from friction of parts get into the engine oil over time. All this greatly complicates full-time work. It should be noted that modern synthetic oils, in addition to an increased service life, have a package of detergent additives. Despite this, engine flushing is still recommended, but not in all cases.

Why does the engine need to be flushed when changing the oil?

The engine crankcase is always left without oil - “dry sump”. The use of this design ensures stable operation of the lubrication system in all modes, regardless of the position of the oil intake and the oil level in the crankcase.

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PROFESSIONAL ENGINE WASHING

For particularly advanced cases, the use of “professional washing” is recommended. This is a wash with a high concentration of active components. Professional cleaning should be used in the following cases:

• in case of constant use of low quality mineral oils (wash at least once every three oil changes);

• in case of severe overheating of the engine (usually, when overheating, the oil strongly oxidizes and forms carbon deposits);

• in case of significantly exceeding the recommended oil change interval;

• in case of systematic use of fuel of questionable quality;

• in case of obvious engine malfunctions: excess oil consumption associated with “sagging”, coking of piston rings, smoking, loss of compression, poor engine starting;

• in case of strong and constant knocking of hydraulic compensators caused by clogging of the oil supply line.

Assortment and technical description

FIVE MINUTES OIL SYSTEM FLUSHING. Significantly increases the cleaning and dispersing properties of used oil. Additionally, it dilutes the oil, which allows you to remove contamination from the most inaccessible cavities and channels of the lubrication system. Contains special anti-seize components that provide additional protection for engine parts and guarantee complete safety of the flushing process. Promotes the most complete removal of used oil from the engine. Due to its ease of use, high efficiency and safety for the car engine, the “five-minute” is in high demand among motorists. That is why this wash can be found not only on the shelves of specialized auto stores, but also at gas stations and in chain hypermarkets. art. 1920

PROFESSIONAL WASHING. Flushing the engine lubrication system (art. 7507) contains a higher concentration of detergent and anti-seize components than the “five-minute” flush. The mechanism of action on pollution is the same. Allows you to effectively wash and safely remove a variety of contaminants: carbon deposits, sludge, varnish deposits that inevitably form in the engine. The composition is so active that it allows you to remove even COTS FROM THE PISTONS AND FROM THE COMBUSTION CHAMBER OF THE ENGINE, restoring normal compression. Helps remove oil-insoluble particles and wear products from parts. Developed on a synthetic basis. The composition is effective for removing varnish deposits, soot and sludge. Can also be used for flushing mechanical transmission units. The washing time should not exceed 10 minutes, since the volatile components of the additive evaporate from the oil and the detergent properties of the composition are sharply reduced after 10 minutes of operation. art. 7507/2425/2428

A special flush is recommended before using the Motor Protect anti-friction additive. The action is similar to PRO-LINE MOTORSPULUNG, but additionally carries out preliminary preparation of the surfaces of friction pairs for subsequent treatment with the antifriction composition MOTOR PROTECT. Helps improve the efficiency of using MOTOR PROTECT. art. 1019

NUMBERED “FIVE MINUTES”. They appeared in the company’s assortment relatively recently – at the end of 2009. The purpose of releasing this line of flushes is to simplify the choice of flush for the buyer with minimal participation from the seller. This is a classic example of a product that “sells itself.” The line consists of three gasoline flushes, varying in effectiveness and intended use cases, as well as a specialized flush for diesel engines. For the convenience of customers, flushes are assigned numbers from 1 to 3, and the operational features are presented in table form:

SOFT WASHING OF THE OIL SYSTEM (100-300 km). Effectively and gently cleans valve mechanism parts, valve covers, and oil pump mesh. The peculiarity of this flushing is the removal of contaminants from those parts on which oil does not fall under pressure, but by splashing or in the form of oil mist. It even removes old oil sludge, against which other flushes are powerless. It is especially recommended for washing engines WITH HYDRAULIC COMPENSATORS and other hydraulic mechanisms, such as valve timing control clutches VVT-i, V-TEC, VANOS and hydraulic timing chain tensioners. Minimally dilutes old oil, which allows for flushing during vehicle operation. An ideal product for flushing engines of cars with high mileage or in cases where the lubrication system has not been flushed before. art. 1990

WASHING MOTORCYCLE OIL SYSTEM. A specialized formula designed to provide gentle flushing for engines that share the same oil sump with the clutch and alternator in the same oil bath. Reliably and carefully removes deposits, carbon deposits, sludge and sludge from the oil system of 4-stroke motorcycle engines. Decarbonizes the rings, increases compression. Does not damage clutch friction linings, varnish insulation of wires, gaskets and seals, or exhaust gas catalytic converter. art. 1638

Work with objections

Good oil cleans itself.	Answer: Towards the end of the oil's life, detergent additives are produced and their effectiveness decreases. Without flushing, contaminants remain in the engine, and the detergent additives of the newly filled oil are developed even faster - by the end of the period of use, it no longer washes, and the accumulation of contaminants becomes an avalanche.
Equipment manufacturers do not recommend washing.	Answer: In the same way, manufacturers do not recommend changing oil in garage conditions, but insist on changing oil in authorized car repair shops, where engine flushes are also used. The first and main principle of creating all Liqui Moly products is DO NO HARM! Liqui Moly washes are completely SAFE. The main thing is to strictly adhere to the instructions for using flushes.
Washing for 5 minutes corrodes the seals.	Answer: This is false!!! Liqui Moly's flushes contain a complex of ingredients that are aimed at restoring the elasticity of oil seals and all rubber seals. Accordingly, corrosion of seals when using Liqui Moly flushes is excluded.
Full volume flushing oil cleans better.	Answer: Such a comparison is very incorrect; in fact, you need to compare the composition of the additives, not the base. The oil itself is only a base, and the detergent properties are provided by the additive package used. Therefore, a truly high-quality full-volume flush is approaching the cost of conventional motor oils. Our flushes are a concentrated package of additives, and the oil poured into the engine is used as a base, which allows you to save both on the cost of flushing and on an additional procedure (drain and recycle twice). The volume of additives in Liqui Moly flushes is significantly greater than in full-volume flushing oil; in addition, Liqui Moly flushes, in addition to detergent additives, contain diluting components, which allows used oil to be drained more completely.
Never washed the engine and everything was fine. Why wash?	Answer: This does not mean that your engine is clean! A dirty engine increases the risk of emergency failure.
I'm afraid to stir up dirt and it will clog the oil passages and the engine will break.	Answer: Liqui Moly washes are completely safe, since they are not designed to “tear off” contaminants from surfaces, but to softly and layer-by-layer wash away contaminants. "Thrombosis" of the system is excluded.
What can she wash in 5-10 minutes?	Answer: Flushing, first of all, dilutes the used oil, which allows the washing active components of the flush to penetrate into hard-to-reach places. In addition, it promotes more complete drainage of used oil. As a result, the maximum possible amount of contaminants is removed from the engine.
It is better to change the oil more often than to spend extra money on flushes.	Answer: A question of economic feasibility. Which is cheaper? Are you ready to change the oil twice as often and fully comply with the operating conditions, using only high-quality fuel, which is very problematic in our conditions? Only in this case will you have a relatively clean engine.
I washed it once, I don’t want to wash it again (negative experience from using washes).	Answer: Find out the reason. Most likely, it is related to one of the objections indicated in this section.
The old flushed oil will remain in the engine and will degrade the properties of the new oil filled in.	Answer: Quite the contrary!!! Old oil thickens and settles on contaminated surfaces, and flushing dilutes the used oil and helps remove it more completely from the engine.
Service station Flushing the engine is not included in the service checklist.	Answer: Engine flushing should be offered to service station clients as an additional service, citing the difficult Russian operating conditions. In addition to benefiting the engine, flushing can bring additional income to the service.
Service station Clients refuse to wash.	Answer: Engine flushing should be offered to service station clients as an additional service, citing the difficult Russian operating conditions. Service station clients need to be explained that this is an additional, completely safe option for the engine, from which they can make good money with the right approach.
The hydraulic compensator must be changed immediately.	Answer: This is a misconception; the performance of hydraulic compensators is restored by flushing, which is much cheaper than replacement.
I use cheaper washes.	Answer: Only a well-known company with an excellent reputation and proven drugs guarantees effectiveness and safety. Flushes from Liqui Moly are German traditions of quality!
A car with high mileage.	Answer: In this case, flushing is simply necessary to increase the service life and restore engine power. In such cases, we recommend “soft” washing, which effectively removes old deposits and coking.
After such a flush, you will be taken to the engine bulkhead.	Answer: There is absolutely no connection between the use of flushing and engine overhaul. Overhaul is always associated with engine breakdown, and periodic flushing of the engine reduces the risk of engine breakdown and extends its service life.

MECHANISM OF FORMATION OF HARMFUL DEPOSITS IN THE ENGINE

In the combustion chamber of a gasoline engine, where the fuel-air mixture enters, it is ignited, completely or partially burned, resulting in the formation of carbon deposits. In addition, products of incomplete combustion of fuel cause the formation of varnish deposits on the internal surfaces of the engine. Next, most of the combustion products leave through the exhaust system, but a small part of the gases breaks into the crankcase and, accordingly, comes into contact with the engine oil. In this case, oxidation and dilution of the oil occurs, and poorly soluble oxidation products are formed, which, in turn, additionally contribute to the formation of sludge and other deposits.

In diesel engines, in addition, sulfur enters the combustion chamber along with the fuel. As a result of oxidative reactions of sulfur, during the combustion of the fuel-air mixture, harmful deposits are formed, which result in corrosion and engine wear.