How to flush the engine when changing the oil

Do I need to flush the engine when changing the oil? – magazine Behind the Wheel

Then they poured oil into the engine, the thickest oil that could be found. The cylinders were not the best and knocked slightly. This was compensated for by the thickness of the lubricant; the engine ran surprisingly quietly.

Erich Maria Remarque

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Fierce debate between supporters and opponents of engine flushing when changing the oil has recently intensified due to the fact that much fewer new cars are sold in the country than used ones.

That is, citizens sell cars to each other, and the renewal of the fleet, which everyone was so hoping for, has slowed down significantly. Meanwhile, a used car, as we know, is a pig in a poke.

What is the age and quality of the substance that was splashing in the engine at the time of sale - only God knows.

This immediately follows the thesis about the need for flushing.

When is flushing not required?

You are the first and only owner of your car;
Have you always changed your engine oil on time (or better yet, more often);
You are confident in the service center where the work was carried out (the service technicians did not cheat by not changing the oil at all or replacing it with their own, cheaper one);
On a long journey you never had to top up anything.

When is the best time to wash?

You should think about washing when purchasing a car second-hand, and even with an opaque service history.

There are examples of engines in which deposits from the upper part of the engine can literally be removed with a shovel.

To do this, it is advisable to look into the oil filler neck with a flashlight, and to the side: cunning sellers may well wipe the visible areas of the cylinder head parts with a rag.

Deposits in the upper part of the cylinder head.Deposits in the upper part of the cylinder head.

Valve cover after long-term operation of the engine without changing the oil. Valve cover after long-term operation of the engine without changing the oil.

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Another case is changing the type of oil base, for example, when switching from mineral water to synthetic.

Flushing options

There are several ways to flush the engine.

Five minute wash. It is poured into the engine before changing the oil, thus mixing with already used oil. Next, let the engine idle for five (or ten) minutes, drain the waste, fill in fresh oil and install a new filter.

Flushes with which you can travel some distance. 100 km before the expected oil change, the drug is poured in, and during this run they try not to be particularly reckless. Next is a standard oil and filter change.

Flushing oil. With this method, the used oil is drained and a special flushing oil is poured in instead. Allow the engine to idle and drain the flush. Install a new filter and fill in new oil.

A typical representative of the “five minutes”. A typical representative of the “five minutes”.

So-called “soft engine cleaners” are added shortly before the scheduled oil change. It is better not to overclock or overload an engine with a filled additive. The so-called “soft engine cleaners” are filled shortly before the scheduled oil change. It is better not to overclock or overload a motor with a filled additive.

With flushing oil, cleaning occurs while the engine is idling. With flushing oil, cleaning occurs while the engine is idling.

Extra oil. A method especially recommended when changing the type of oil base, for example, when switching from mineral to synthetic. It can also be recommended for fairly dirty engines, washed using one of the three methods above. After draining the old product, fill in the oil on which the engine is supposed to be used for further operation.

Additional oil filling is the best, but also the most expensive method.

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The amount of oil can be minimal (two liters), just so that the oil pressure lamp goes out. In this case, it is also recommended to run the engine at idle speed. This volume is then replaced with new oil and a new filter installed.

For especially careful owners, there is a modification of this method: replace the oil and filter with new ones, drive for a short time, and then carry out another replacement.

In this case, at the intermediate stage, oil will need to be filled no less than to the bottom mark.

General tips for cleaning

Monitor the oil pressure when the engine is running on all the cocktails described above, except perhaps in the case of filling in an extra portion of oil. Be especially careful when flushing diesel and supercharged engines - their specific loads are usually somewhat higher and oil starvation is completely unacceptable.

Cheap - cheerful

On the Internet, numerous forums suggest flushing engines with diesel fuel, both pure and diluted in half with engine oil.

I am of the opinion that fuel is fuel, and it is better to flush the engine using one of the above methods.

A solar bath can be very harmful to oil seals and other rubber seals of the engine. This liquid is very aggressive.

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Some useful tips when changing the oil at a service center

Try to keep your vehicle in sight during this procedure. This way you will be sure that you have filled in new oil and installed a new oil filter.
If you were unable to follow the previous advice, then when you receive the car, check the oil level on the dipstick. The oil should reach the top mark and be light enough. Although in gasoline engines, even after a short period of operation, it may darken somewhat, and in diesel engines it may even turn black. And yet it will be much lighter than before the replacement.
Try to determine if the filter has been replaced. On some cars it is visible from above, on others it is accessible only by removing the mudguard or engine protection. In this case, check whether these elements show signs of dismantling.

From personal experience

I somehow bought a Renault Logan from a good friend. Mileage - about 100 thousand km. I knew the history of the car very well, as I often helped with repairs. There were suspension malfunctions (bearings and shock absorbers), the rear brake cylinders were “candied,” and the driver’s seat was sagging.

But now, having become the owner, I decided to look into the engine and adjust the valves. The gaps had to be touched only on a few valves, and then only a little at a time. And most importantly: I was shocked by the complete absence of deposits under the valve cover. The parts were only slightly covered with a light golden coating.

And I also teased the previous owner about how he changes the oil more often than he fills the gas tank!..

In such an engine, it is also pleasant to regulate the gaps in the timing mechanism.

It is best to change the oil at least every 7.5 thousand km, that is, twice as often as most automakers recommend.

In this case, regardless of operating conditions (city or village), you are guaranteed to avoid accelerated wear of engine parts.

Only those who have a “new” car should immediately follow this rule, and second-hand owners should first carry out washing operations, as indicated above, and then follow the same recommendations.

More information about motor oil and additives is in the selection of publications “Behind the wheel” “Motor oil: what kind and why should you pour it?”

Dear readers! In the comments, tell us about your attitude to engine flushing. Is it necessary, in your opinion? Do you carry it out?

Flushing the engine when changing the oil: good or bad?

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Source: https://www.zr.ru/content/articles/905586-promyvka-dvigatelya-pri-zamene/

Is there any point in flushing the engine when changing the oil?

Motor oils contain many additives: detergent, extreme pressure, antioxidant, etc. If you use the recommended oil and change it regularly, there should be no deposits or contamination in the engine. Wear products are merged with the used oil from the engine during replacement. However, in practice this is not entirely true.

It happens that car enthusiasts use several oils of different manufacturers or types in succession. As a result, different types of oils are mixed in the engine, which leads to the formation and loss of unwanted deposits.

During overheating, the oil irreversibly loses its properties, decomposing, which also leads to engine contamination. This applies to worn-out engines, because in them most often hot exhaust gases break into the crankcase.

As a result of these reasons, the oil gradually begins to coke, indelible deposits form on the walls of the crankcase, cylinders and other surfaces until the oil channels are completely clogged, which can lead to a drop in oil pressure in the system.

At each change, part of the used oil (about 10% of the total volume) is not physically drained from the power plant and remains inside. When interacting with fresh oil, old oil causes accelerated oxidation, which reduces service life. As a result, fresh water does not have time to exhaust its resource and aggravates the situation with deposits.

This may be the condition of the engine after poor care

How to flush the engine?

The flushing procedure itself using flushing oil is extremely simple. To flush the engine, you must first drain the old, used oil, then fill in the flushing oil.

The engine starts and idles for several minutes. The washing time is indicated in the instructions. During flushing, it is forbidden to increase the speed, since flushing does not have sufficient lubricating properties.

After this, everything is completely drained and fresh working oil is added.

There are so-called “five-minute products” - products packaged in small bottles that restore the cleaning properties of used oil. They are added directly to the motor before replacement and allowed to run for five minutes. The next process is the same as with flushing oil. The oil filter is replaced immediately before adding new oil.

Flushing fluid - “five minutes”

Five-minute washers have good cleaning properties and easily remove dirt from the crankcase walls.

When working with five-minute tablets, strict adherence to the instructions is necessary, because this is an aggressive drug. If the instructions say that you should flush the engine for exactly 5 or 10 minutes, you do not need to run the engine for half an hour, the seals may not survive this. If you spend five minutes in the engine longer than the specified period, you can damage the power plant.

For diesel engines, flushing with diesel fuel is recommended, but this is too aggressive a liquid; oil seals and rubber seals may not withstand its impact.

As already mentioned, when the oil is drained, about 10% of the volume remains in the engine, and, accordingly, the components of the flushing fluid remain with it. It is not possible to completely remove them without disassembling the engine, which means they will have a negative impact on fresh oil.

The use of “five-minute” is allowed in rare cases where the engine is highly contaminated. In other cases, the use of full-volume flushing oil is justified.

Should I use flushing oil? In essence, it is the same oil with a mineral or synthetic base, but has an increased set of detergent additives and is capable of supporting the engine only during flushing. It can dissolve harmful deposits and remove them from the engine.

Video: Flushing the engine (diesel oil) + changing the oil

Buying a used car.
When purchasing a car whose service history is unknown to you (carbon deposits and sludge have accumulated in the engine), it makes sense to replace it with an engine flush.

Use a stepwise method: first flush the engine with flushing oil, and then fill in with a simple engine oil, but which must correspond to your engine according to SAE and API classifications. Make the next replacement after 1-2 thousand km.
Switch to another type of oil.

If you decide to switch, for example, from mineral water to synthetic, it is recommended to flush the engine, since mixing different types of oils can cause sediment and deposits, which subsequently clog the oil passages.
Emergency situations.

The engine is flushed if you have had to mix motor oils, use oil of unknown origin, or there is a suspicion that it is a fake.
Transfer to another class.
When switching to oil of a higher class (according to SAE or API classification), it is also necessary to flush the engine.

Flushing is not required if you are the only owner and have changed the same oil regularly and on time.

What to wash with?

A small list of engine washing liquids with a standard volume of 4 liters.

ZIC FLUSH. This washing liquid has good cleaning properties. Safe for polymer sealing parts (oil seals). It has the ability to preserve the properties of fresh oil, preventing its oxidation.
ENEOS FLUSH. Excellent cleaning properties. Capable of maintaining deposits in suspension, preventing clogging of oil channels.
"Lukoil". Good quality/price ratio. It has a serious additive package with excellent anti-wear properties and dissolves old dirt well.
"Lakiris." Product based on base oil with the addition of detergent and antioxidant additives. Gently dissolves sludge and carbon deposits and removes dirt well.
TNK Promo Express. Popular engine flushing fluid. It is used by both garage mechanics and service stations.

Source: http://AvtoMotoProf.ru/obsluzhivanie-i-uhod-za-avtomobilem/promyivka-dvigatelya-pri-zamene-masla/

How to flush the engine when changing the oil with diesel fuel: photos and videos

Solar fuel perfectly performs the cleaning functions of the internal channels of the cylinder block, while simultaneously possessing lubricating properties.

Pros and cons of diesel fuel as a flushing fluid

There is an opinion that the quality of the function performed is superior to flushing liquids.

Automotive polyglots advise not to abandon the use of this method. This is motivated by the expediency of mixing diesel fuel with car oil in a 1:1 percentage ratio.

In this case, the total displacement poured into the crankcase is observed.

Using a cheap filter, you can begin the washing procedure, for which you need to stock up on standard motor oil, a new filter, and five liters of diesel fuel.

Is it necessary to wash the engine?

If good oil is poured into the engine, then there is no chance of deposits forming.

However, flushing the internal cavity of the engine clean is questionable. The cylinder block has channels, hard-to-reach labyrinths, from which it is difficult to remove diesel fuel used as a flushing liquid. So, you need to stock up on five liters of diesel fuel or kerosene and a filter (not expensive).

Mixed oil and diesel fuel in a ratio of 60/40

The process of flushing the engine with diesel fuel

The washing and replacement process is accompanied by the following steps:

The engine warms up to operating temperature (80-90° C) and the remaining oil is drained through the crankcase hole. This is done on a cooled engine.
The engine starts for 15-20 seconds, with a periodic increase in speed. The manipulation is repeated two or more times.
Close the drain plug of the pan and add the remaining diesel fuel to the upper mark of the dipstick. This is done quickly in order to wash away clots of dirt from the channels and pan with a stream. It is not recommended to heat it above 50°C, giving it time to cool down. With this approach, dissolved deposits are removed with diesel fuel residues.

If contamination is visible to the naked eye, then the washing operation must be repeated several times.

A contaminated environment requires repeating the washing procedure many times at higher speeds, at which dirt is better removed . Viscous, stubborn deposits are removed by gradually increasing the oil pressure (3000 rpm). The option provides for a long service life. The process is completed by replacing the new filter with standard lubricant.

Upon completion of the work, the machine is operated in run-in mode for 2-4 days, without being subjected to heavy loads.

At the same time, there is no need for flushing if the car has only undergone servicing. That is, a car purchased at a car dealership - scheduled work was carried out at a service station. This is based on the removal of contaminants along with additives.

When flushing is not necessary

If you suspect that the engine is very dirty, it is better to clean it by hand, otherwise layers of dirt will foam and get into the clean engine oil

Flushing is not required in cases of replacement:

Synthetics to synthetic lubricants.
Synthetics to semi-synthetic oil.
Mineral to synthetic.

When changing product manufacturers, since motor oils are the same in composition and are selected according to marking and class.

There is a need for flushing if:

It is necessary to replace, for example, mineral oil with synthetic oil and vice versa.

Type of dirty engine:

After completing the repair of the block, especially the head.
There is no information about previously filled oil.
The oil contains antifreeze, a different brand of fuel, and low quality oil.

The engine is washed no more than once a year, preferably when changing the oil.

What to wash with?

Clogged lid

Motor oils contain additives with detergent, anti-corrosion, antioxidant, and extreme pressure properties. They are not prone to the formation of deposits and dirt. Many of them are retained by the filter, and some are discharged through the crankcase drain hole. Deposits accumulate if different brands of oil are used.

That is, the remaining contaminants, mixing with the engine oil, precipitate, forming deposits. Frequent overheating of the engine leads to the formation of these, causing decomposition of the motor fluid. As a result, coke deposits that are difficult to wash off and sometimes cannot be removed appear on the inner walls of the block. The situation comes down to the rapid depletion of the lubricant life.

What's better

GZox Flushing Oil

It is preferable to use flushing fluids for the engine. Their range differs in additive components.

FlushOil - is poured after draining the waste. It is recommended to operate the car for 50÷500 km before filling with new oil.
EngineFlush - used after removing the old one. Can be added to the oil in the pan. It is advisable to let the machine idle for a few minutes.
Cleaning additives are poured into the engine 3-4 days before replacement. They have the ability to penetrate everywhere, splitting and dissolving sludge and slag.

Result of using flushing fluid

Meanwhile, there is no consensus regarding flushing oils. Doubts are raised by aggressive (alkaline) additives, which unsatisfactorily clean coked deposits of dirt within a few minutes of engine operation. And aggressive compounds lead to corrosion of rubber seals.

Flaws

Result after manual washing. Using diesel fuel as a flushing liquid will not give this result.

For example, diesel fuel, being a fuel, does not dissolve slags and carbon deposits, but peels them off from the walls. These contaminants, which are not completely removed, circulate with fresh motor oil, impairing its beneficial properties. That is, exfoliated contaminants are poorly washed out completely when drained.

They pose a danger in that they clog lubrication channels and mesh, leading to decreased circulation and oil starvation of operating components . The use of flushing fluid with alkaline additives inevitably leads to damage to the rubber gaskets, oil seals, and seals. And this is a direct road to failure of the power unit.

The proverb “An old friend is better than two new ones” suggests itself. Or maybe diesel fuel is better than alkaline products.

Video about flushing the engine with diesel fuel

Source: http://carfrance.ru/promyvaem-dvigatel-pri-zamene-masla-solyarkoj-kak-zachem-i-pochemu/

How to properly flush the engine when changing the oil

The topic of flushing the engine when changing the oil is of interest to many motorists. Experts conducted a detailed analysis of this issue and drew conclusions.

If you look under the valve cover where the oil filter is located, you can see that a large amount of dirt has accumulated in the engine.

Answer to the question: “Do I need to flush the engine when changing the oil?” can only be given by a highly qualified specialist.

In what cases is mandatory flushing necessary?

When switching from one brand of motor mixture to another. This includes types of oil such as semi-synthetic, mineral and synthetic. Particular attention is paid to such an indicator as viscosity. Oil from different manufacturers cannot be mixed in an engine, because each individual brand has its own unique set of additives.

They should not be mixed with each other under any circumstances.
After purchasing a car that has already been used. Many drivers do not know what oil the previous driver used for his car. It is best to flush the engine to avoid serious problems in its operation.
The engine flushing oil must be changed during intensive use of the vehicle. This applies to cases where drivers drive fast and cover long distances. All parts require more intensive and regular lubrication. This means that all wear products need to be constantly removed.
Owners of cars equipped with a turbocharged engine must buy oil of the highest quality. You need to pay attention to its crystal purity. Dirt and other impurities can damage car parts.
After performing the dismantling work of the motor, followed by its complete disassembly.

In this case, qualified mechanics recommend washing all components manually using kerosene, diesel fuel or gasoline. Flushing the engine is a rather labor-intensive process that requires certain knowledge and little experience. This stage is considered the most effective.

To find out how to flush the engine, it is best to contact a qualified specialist. Diesel oil is a product of petroleum distillation, which is used not only as fuel, but also to lubricate engine parts.

In what cases is it not necessary to clean the engine?

A large number of motorists are wondering whether it is necessary to flush the engine when changing the oil.

Experts have identified several cases when engine flushing is not necessary:

After purchasing a new car at a car dealership.
With timely and correct servicing of the vehicle at specialized service stations with an excellent reputation.
If high quality engine flushing oil was used.
Engine flushing and oil changes were carried out on time. Today, engine flushing oils include a full set of necessary additives. Their main purpose is to thoroughly clean the engine. Absolutely all dirt particles will be washed out along with the engine fluid.

If you entrust flushing the engine to an unqualified specialist, you can cause serious damage to your own car. After draining the engine, a certain part of it may remain directly in the pan. After this, it will be mixed with lubricating mixtures, resulting in a slight change in the basic characteristics and viscosity.

What methods and means are effective?

Today there is a large assortment and selection of lubricants on the automotive market. When purchasing, the main thing is not to make a mistake with your choice and not to damage your car.

To decide how to flush the engine, you need to familiarize yourself with the tips below:

Special oil for cleaning the engine from impurities. This method is the most ineffective. After performing such work, the concentration of dirt in the existing liquid decreases. Sediments and other impurities will not be completely washed away or dissolved.
Flushing the engine using a vacuum pump. This is also an ineffective method that has been tested for decades. The vacuum pump is used at service stations only in cases where it is necessary to change the oil in the shortest possible time. Some experts are convinced that pumps are capable of completely pumping out all existing impurities and dirty residues. But this statement is erroneous and does not bring the expected results. Today, pumps that can clean even hidden cavities have not yet been invented. This also applies to dissolving dirt on the engine walls.
Quick engine flushing with special solvents. Their main operating principle is speed. The liquid must be poured into the motor for ten minutes and then turn on the motor. It should work a little, after which you can drain this liquid. After much research and careful analysis, it became clear that they are ineffective and can cause irreparable damage to the internal parts of the engine. Special quick washes cannot deal with dirt or dissolve it in a short period of time. After such exposure, the oil channels become clogged with deposits, and the required amount of lubricant does not enter the engine. This leads to its further failure. The most concentrated engine flushing oils in some situations can cope with their main task and rid the engine of deposits. But there is a huge risk that they will damage the integrity of the rubber seals. After such an engine flush, you will have to repair the car and buy spare parts, which today are not cheap.
The most effective and efficient method of cleaning an engine is to use a long-lasting flush. Before changing the oil, you need to fill the engine with this liquid. Next, you need to drive 50-500 kilometers, after which the old oil is drained and new oil is poured in its place. Over this entire period of time, absolutely all deposits will have time not only to be washed off the engine, but even to dissolve. At the same time, no damage is caused to all parts and components.

How to properly wash?

In order to flush the engine when changing the oil and not harm your own car, you must first consult with a highly qualified specialist.

He must have extensive experience in order to correctly and accurately determine the condition of the vehicle.

Some motorists believe that engine flushing can be done as a preventative measure. But this opinion is absolutely wrong. These actions cause maximum damage to the car engine, after which partial replacement of its parts will be required.

Flushing to keep the engine clean is only possible in certain cases. Before doing this, a specialist must assess the condition of the system and its cleanliness.

From the large number of techniques and methods used, it was possible to determine the most effective cleaning of the engine from various deposits.

To do this you need to follow a number of simple steps:

the old lubricating mixture is drained;
A high-quality engine cleaning agent is poured in. Next, you need to turn on the engine in which the product is located for twenty minutes. The engine must be idling;
Next, the waste liquid must be drained;
a low-quality product is taken and the engine is turned on again to idle. At this stage of flushing, the engine should be run for one hour;
low-quality liquid is drained;
Next, motorists must fill the engine with good and proven oil.

Existing types of flushing oils

Today, the automotive market offers a wide and varied selection of engine oils. Each manufacturer tries to make a beautiful and eye-catching advertisement for their product, while not forgetting to list all the benefits.

But after the purchase, drivers and technicians at service stations note that there is simply nothing new in such an offer.

There are two main types of motor oil:

Long-term exposure. This special liquid must be poured directly into the engine after the person has first drained the old one. After this, it is important to drive the car for about two days to thoroughly clean all parts and components.
Fast acting oil. On average, it lasts for ten minutes. It is necessary to fill in such liquid after thoroughly draining the waste. Such oils can clean the engine while idling.

The additives in their pure form are in greatest demand and popularity. They are produced by the world famous company LiquiMoly, which has gained the trust of many motorists. The presented additives must be added to the oil for a certain amount of time before further replacement.

They will gradually do their job and thoroughly clean the engine of blockages. As noted above, this is a fairly effective and efficient method. Additives do not harm the car and also have a beneficial effect on the entire system.

The flushing oil contains the following components:

High quality base. Manufacturers use mineral industrial oil. The most common types are I-40 or I-20.
A certain part of aggressive additives. These ingredients can effectively dissolve all the dirt that has accumulated in the engine over a certain amount of time.
Additional additives. These components are able to minimize the negative impact of flushing on various engine elements.

Long-term washes have a gentle effect on the engine, as well as all rubber products. When industrial oil is poured into the engine, the driver must take several precautions. Experts recommend operating the vehicle exclusively in a gentle mode.

Another common method of cleaning a car engine is in particular demand among drivers - high-quality oil. It is this liquid that is poured into the engine. The presented method of flushing the engine is used by a huge number of official service stations and dealership centers.

How to properly flush the engine when changing the oil Link to main publication

Source: https://dvigatels.ru/zamena-masla/promyvka-dvigatelya-pri-zamene-masla.html

How to flush the engine when changing the oil

Every car owner should understand how to flush the engine when changing the oil, since this procedure is necessary in a number of situations.

Engine flushing is necessary:

if the engine has gone through too much service life;
if you plan to switch from the summer to the winter season or vice versa;
if you want to change the type of oil used.

It is necessary to flush the engine to wash away the components of the old oil, its additives, as well as wear products of parts.

When a car owner plans to change the type of oil, this is done in order to avoid the new oil from curdling due to a small amount of old oil getting into it. Special liquids are used for washing.

There are two ways to flush the engine when changing the oil.

The first method is to use a flushing fluid that does not require draining the old oil. It is most often sold in containers of no more than 1 liter.

The flushing liquid is poured into the filler neck, on the plug of which in most cases there is the inscription “Oil engine”.

Next, you should follow the instructions included with the purchased liquid.

In general terms this goes like this:

after adding flushing fluid to the old oil, you must start the engine;
The car should run for about 10-15 minutes at idle speed.
The oil must be drained to the last drop by unscrewing the plug in the sump (crankcase).

While the old oil is being drained, it is necessary to change the fine oil filter. It is unscrewed with a special puller in a smooth movement with force, disposed of, after which you need to wipe the location of the filter from oil and dirt with a dry rag.

https://www.youtube.com/watch?v=vvl-SXuzUDw

Next, a small amount of new oil should be poured into the new filter, which is planned to be poured into the engine.

This is necessary in order to saturate the filter elements. This procedure will help pressure build up in the oil system more quickly.

The rubber o-ring is also lubricated with new oil so that the filter is pulled more tightly to the plane of its location. After this, the new part can be placed in its designated place.

The next step is to tighten the drain plug. It must first be cleaned of chips and dirt, since a magnet is installed there to attract small metal particles that arise from rubbing parts during engine operation.

Next, use a rag to wipe the crankcase from drops and dirt formed when draining the old oil.

After this, it is time to fill in new oil. Fill the filler neck with about 2 liters of fresh oil using a funnel, if necessary.

Its level is checked using a special dipstick, which must first be wiped.

Oil is gradually added until it reaches the maximum mark on the dipstick.

The filler neck must be closed with a plug, and then start the engine at idle speed. In this case, you need to look at the indicator indicating the pressure in the system.

It can be either a light bulb or an arrow on the instrument panel, or both at once. After making sure that the pressure is normal, you need to let the engine run for about a minute and turn it off.

After this, you need to wait 2-3 minutes and assess the oil level again; it should not exceed the maximum mark. If necessary, you can add a little oil, but do not forget to check with the dipstick.

You should remember or write down the mileage on the speedometer so as not to exceed the car's mileage with new oil. The recommended mileage between oil changes is approximately 15,000 km.

The second method of flushing the engine when changing the oil requires completely draining the old oil product.

The procedure is almost the same as described above, but first you need to drain the old oil by unscrewing the plug in the engine sump.

In this case, it is not necessary to do it to the last drop. Next you need to tighten the plug.

Flushing fluid should be poured into the engine filler neck in an amount of 1.5-2 liters, periodically checking the level with a dipstick.

It is recommended to fill the motor so that the fluid level is between the minimum and maximum.

Next, according to the instructions, you should start the engine and let it idle for 10-15 minutes. This allows you to wash all oil channels, passages, and rubbing parts.

Upon completion of the washing procedure, the liquid is drained through the plug in the pan. Similar to the first case, the filter is replaced and new oil is added.

There is no need to be afraid that some amount of flushing fluid will remain in the engine, since it is neutral to both mineral and synthetic and semi-synthetic oils.

What oil to use

It is important to understand not only how to flush the engine when changing the oil, but also what oil to use in the future.

You need to use the oil for your car’s engine that is recommended by the manufacturer.

You can also take another brand of oil, but its parameters must match those recommended. The viscosity of the oil should correspond to the season.

Some cars can run on synthetic oil in both winter and summer. But usually in winter, synthetic and semi-synthetic oil is used, as it is resistant to low temperatures.

Mineral oil is used in summer and is resistant to high temperatures.

Advice for car enthusiasts

We can give some tips to car owners that will help protect the engine and reduce the risk of breakdowns:

You must always monitor the oil level;
Do not exceed the mileage between oil changes;
Only high-quality petroleum products and original oil filters should be used;
Flushing the engine when changing the oil should be carried out regularly, as it allows you to eliminate microparticles of metal, additives, revitalizants, reducing agents found in the old oil, in order to avoid their mixing with the new one;
When flushing the engine, it is important to replace the fine oil filter, since if there are too many deposits and dirt on it, the oil from the channels will drain into the crankcase. In the future, this will lead to the engine running without lubrication at startup and causing rapid wear.

Thus, flushing the engine is of considerable importance. It allows you to effectively clean the engine from the inside and get rid of accumulated contaminants.

After this, you won’t have to worry about the purity of the new oil.

Source: http://avtohomenew.ru/kak-promyivat-dvigatel-pri-zamene-masla.html

Is it necessary to flush the engine when changing the oil: basic rules

Is it necessary to flush the engine when changing the oil?

Greetings, dear motorists! Today I decided to raise a burning question that worries many of you: is it necessary to flush the engine when changing the oil? It is known that this working fluid should be replaced every 10–15 thousand kilometers traveled by the car or annually. Is it necessary to clean the engine additionally by flushing during this procedure? Let’s figure it out together.

The need to clean the power units of a modern car

First, it is necessary to determine whether the power unit needs to be flushed at all, and for what reason it may require such an operation.

Automotive lubricant is intended not only to lubricate moving (subject to friction) parts and components, but to clean them from various types of contaminants, such as unburned fuel, dust and wear products.

It is these particles that are washed off by the oil from the cylinder walls and deteriorate its quality.

It is definitely believed that flushing oil or other concentrates are necessary in cases where the owner switches from one type of engine lubricant to another. This is due to the danger of mixing different types of oil that are not compatible with each other.

For example, there are often situations when a car owner purchased a used car and forgot to check with the previous owner what type of lubricant he used. In this case, you also cannot do without washing.

You can try to determine the type of oil on your own: to do this, drain a small amount from a hot engine and see if a suspension forms. If there is even slight doubt, the power unit should be flushed.

Existing engine cleaning methods

If you have already decided on the need to clean the engine, then how to choose the most correct method of flushing - we will find out further from all the proposed options:

5 minute washes. They are added to the engine with old, used oil, after which the engine should be allowed to run for about 5–10 minutes. Not all experts approve of this technique, as reviews show. It is believed that the liquid is weakly concentrated and is simply not capable of washing away deposits in the engine in minutes. All this can cause contamination of the oil channels, as well as corrosion of the seals. There is an opinion that this option can either help or harm the engine;
long rinses. One of the effective methods on how to clean a gasoline engine. You will probably be interested in the question, how long should you drive on such concentrates? They are filled and rolled on them for 50 to 500 km. During this time, the deposits are washed off well, and then all that remains is to drain the oil along with the dirt and the rest of the concentrate and refill with fresh oil;
use of a vacuum pump. This method is usually practiced at car services that offer an “express oil change” service. However, despite the fact that part of the dirt can be pumped out, the pump cannot eliminate particles that are located in the hidden cavities of the engine;
special flushing oil. Unlike other methods, it is filled in after the used oil has been drained. Its use time usually does not exceed 5–10 minutes, and it contains a significant number of detergents. Unlike “five-minute” liquids, it is capable of efficiently washing out suspended particles. Such oils are usually mineral-based, which is why they are not compatible with synthetics. As soon as it drains, fresh lubricant is poured into the system.

Do I need to use additives?

Today, various detergent additives are considered popular, which are poured into the engine simultaneously with fresh lubricant. However, as practice shows, such additives are more or less effective only for the first time after entering the system. As they are used, they decompose, and at the end of their service life they cease to cope with their tasks.

Let's not forget that up to 20% of oil can be found in residues in various hard-to-reach areas and cavities of the engine. Along with them, a variety of dirt accumulates there. As soon as it is mixed with oil, its properties will immediately begin to deteriorate.

Even if you use high-quality products when changing the brand of oil, each time it will function worse and worse. These are the reasons why periodic engine cleaning is recommended.

It can be carried out not during routine replacement of the lubricant, but at least once.

How to maintain a diesel engine

The question that deserves special attention is whether to flush a diesel engine and what is the best way to do it? In fact, the basic principles here work exactly the same as in the case of a gasoline engine.

Flushing oil becomes the only acceptable solution, but the diesel unit itself requires a more careful attitude.

If you use cheap 5-minute supplements, then be prepared for the corresponding consequences.

In the past, car enthusiasts used common methods of washing with gasoline or diesel fuel. Today we do not recommend anyone to use such old-fashioned methods, especially for modern engines.

Diesel fuel was also diluted in a 50 to 50 ratio with mineral oil and created a special protective film. Gasoline does not have enveloping properties.

Its vapors can cause premature wear of the metal in the engine.

Recommendations for flushing before changing engine lubricant

Let's summarize in which cases flushing the engine before changing the oil is a highly recommended procedure:

in case of purchasing a used car. Despite the assurances of the previous owner, you will never be able to find out for certain how high-quality oil was used in it, and how often, so it is best to play it safe;
in case of switching from one type of oil to a qualitatively different one. This is true not only for the type of lubricant, but also when changing its viscosity level (for example, 5w30, 10w40, etc.) This is due to the unique composition of additives in each individual type of oil;
due to intensive use. How to use flushing in this case? Intensive and high-quality lubrication is especially important for those drivers who often practice fast, dynamic driving at high speeds;
if the engine is equipped with a turbine. Such power units prefer high-quality, and most importantly, clean oil. The accumulation of dirt and blockages quickly reduces the service life of these engines;
when completely replacing the engine or overhauling it. During such work, all parts are not simply disassembled, but it is accompanied by thorough cleaning. In this case, it is possible to manually remove up to 100% of contaminants and deposits using kerosene, diesel or gasoline fuel. Another thing is that such work should be performed by experienced mechanics at specialized service stations.

Source: http://avto-kul.ru/tehnicheskoe-obsluzhivanie/promivat-li-dvigatel.html