Should the sludge in the engine be cleaned?

First of all, the subject's question, the cleaning of oil sludge is very necessary, but the cleaning must avoid several misunderstandings.

First of all, let's understand how oil sludge is formed.

Sludge formation and the inside of the engine lubrication system are divided into low-temperature sludge and high-temperature sludge.

Low-temperature sludge is produced by the combined action of blow-by gas (containing unburned fuel and water) and engine oil. During short distances, the moisture and fuel in the crankcase do not evaporate completely, resulting in emulsification, which leads to the formation of sludge.

Oil sludge is due to the temperature situation, some of the macromolecules polymerize, so that the oil becomes thick, thus forming oil sludge, which is what we often say"Black oil sludge".

Hazards of oil sludge.

Why is it better to clean up the sludge?

First of all, the oil sludge is insoluble in the engine oil, so the oil sludge can not be completely discharged when changing the engine oil, and a large amount of oil sludge may block the oil channel, resulting in no lubrication between the parts to form a "dry grind", which in serious cases leads to the phenomenon of burning tiles and holding shafts.

Secondly, the adhesion of oil sludge to the inner wall of the crankcase will reduce the heat dissipation capacity of the cylinder block, resulting in high oil temperature and reduced engine power.

crankcase) and when the sludge adheres to the internal oil passage of the engine, it will increase the flow resistance of the oil, reduce the flow of the oil, and affect the lubrication effect between the components.

Clear up the misconceptions. The first point: when the oil is very heavy.

In this case, it is generally recommended to disassemble it for repair, if it is cleaned directly, some oil sludge will fall into the engine, which will affect the subsequent cleaning ability, and will wear the engine, which outweighs the loss.

The second point: I am afraid of oil sludge and change the oil frequently.

The production of oil sludge is normal, and a small amount of oil sludge can even play a role in protecting the engine a little. As for some 4S stores.

As well as some "professionals", it is recommended that you change the engine oil after 3000 to 5000 kilometers, which is basically not needed and causes unnecessary waste.

The subject mentioned that for what you described, the car ran 40,000 kilometers, and the oil was very black every time it was changed, but in fact, this situation is normal.

But for the oil that often gets dark, let's also discuss why the oil goes black so quickly.

The first possibility is that the filter is of inferior quality. If an inferior oil filter is used, the oil is not filtered well, and the oil will quickly turn black.

If you rule out the above problems and the oil still turns black quickly, you can pour a little oil on your hands, and if there are small black particles in it, then you need to clean up your carbon deposits. Finish! Say "!

<> engine sludge is very necessary to clean, the sludge appears inside the engine lubrication system, such as piston skirt bottom, crankcase oil pan, oil duct, timing gear cover, valve chamber side cover and other low temperature places. The color is gray-black paste or solid.

Hazards of oil sludge.

Because the oil sludge is insoluble in the engine oil, it cannot be effectively discharged when the oil is changed, but it causes rapid aging and deterioration of the new engine oil (which is why the new engine oil becomes dirty after two days), so that the expensive new engine oil cannot run the normal kilometers. In the case of serious oil sludge, the harm to the vehicle is more serious than carbon deposit, such as blocking the lubricating oil circuit, aggravating friction, poor heat dissipation, and eventually leading to accidents such as burning tiles and shafts, resulting in engine overhaul.

During the continuous reciprocating work of the engine piston, the gas from the combustion chamber escapes into the crankcase (in the lubrication system) through the gap between the piston ring and the cylinder wall, which is the main cause of sludge. After entering the crankcase, it is mixed with the oil, and with further oxidation and condensation, the lubricating oil acid insoluble matter is formed, and then bonded with other solids and water vapor, and finally formed oil sludge, which settles everywhere.

How to deal with oil sludge:

1. Priority is given to high-quality engine oils, such as semi-synthetic and fully synthetic;

3. Priority is given to the use of oil filters with large capacity and high filtration effect;

4. Regularly clean the lubrication system without disassembly.

There are two kinds of lubrication systems on the market, one is called "engine cleaning oil" and the other is called "engine cleaning agent".

At present, the more popular is the "engine cleaning agent", which is more convenient to use, before changing the engine oil, it will be added to the engine, let the cleaning agent and the old engine oil mix, let the engine run for a while, let the cleaning agent and oil sludge be fully mixed together, and then drain the waste oil, and finally replace the new oil filter, a "thorough" maintenance is completed.

Unless you are using a particularly fake engine oil, you don't have to worry about oil sludge at all for 40,000 kilometers. The oil that comes out during maintenance turns black.

Thickening. Turning black means that the oil has good cleanability, and the normal good oil starts to turn black at 500 kilometers. There are two types of thickening:1The oil is emulsified by water intake.

Your situation should not be like this.

2.Psychological sensations.

The more you use the oil, the thinner it will become.

If it feels thick, the oil can still run.

There is no need to replace. As for cleaning the sludge, you can only disassemble the engine, and whether you can install it back after dismantling it is a question, remember that there is no need to worry about such problems as the normal maintenance of the car, such as carbon deposits.

Oil sludge, a normal engine running 800,000 kilometers is not a big problem, 40,000 kilometers is still in infancy. Remember that the car is repaired, not driven.

First of all, it is necessary to clean the oil sludge, compared with the shortcomings such as blocking the oil pump oil channel, not cleaning will bring problems such as engine power reduction, aggravated friction, increased crankshaft load, pollution of new engine oil, etc., which will bring greater harm.

Engine power decreased.

Is engine sludge cleaning necessary.

After forming a large amount of sludge, it will adhere to the inner wall of the cylinder, and the pressure generated will directly hinder the smooth movement of the piston, and the high temperature in the engine cannot dissipate heat through the flow of oil, resulting in a decrease in engine power and a surge in fuel consumption.

Reduced mechanical component life.

Is engine sludge cleaning necessary.

Due to the existence of oil sludge, its lubrication effect will be greatly reduced, the oil sludge is difficult to be diluted by the oil, and the mechanical friction will be aggravated in the state of cylinder movement, increasing the rotating load of the crankshaft, and bringing serious damage to the engine.

Contaminating new engine oil.

Is engine sludge cleaning necessary.

The oil sludge will become more and more uncleaned for a long time, and even if the engine power is changed, even if the new engine oil is replaced, the problem of space compression cannot be eliminated, and the new engine oil will deteriorate.

During the cleaning process, the oil sludge may cause the oil sludge to fall off and block the oil passage, so it is recommended to go to a professional 4S shop for cleaning.

There is a need. It is recommended to clean the car that has not been cleaned and maintained for a long time, the oil change cycle is long, the road conditions are bad, or the car that has driven 45,000 kilometers.

The cleaning of the inside of the engine in everyone's mouth should refer to the cleaning of oil sludge and carbon deposits in the engine. When you usually use a car, you can solve some oil road problems by regularly using some "fuel additives", but in fact, a new car of just 20,000 kilometers is not as much carbon as imagined. What about engine sludge cleaning?

Given the mileage of your vehicle, it is almost unnecessary to do an internal engine cleaning if your car is not unusual, especially if the mileage is short.

So is it necessary to specialize in oil sludge cleaning?

Many repair shops and 4S shops will definitely hang out or let you see some serious sludge in the engine, and let you do what he calls "engine internal cleaning". But the real situation is that today's engine oil is not only lubricating, but also contains clean ingredients, which can effectively remove the dirt in the engine.

As long as there is no problem with the quality of the engine oil used and regular maintenance, there will be no problems.

There are also some car owners with poor maintenance habits, the oil is used overtime, and the oil is not replaced after expiration, or the oil has deteriorated, so that the cleaning and lubrication effect of the engine oil will be greatly reduced.

The adhesion of oil sludge to the cylinder wall will also increase friction, resulting in high fuel consumption. At the same time, dirty oil can cause insufficient oil pressure, which can lead to valve failure with hydraulic tappets, causing abnormal engine noise, unstable idling, and reduced engine power. Although the general engine oil has a cleaning effect, once the oil sludge is generated, it will not be discharged when the oil is replaced, and it will contaminate the new engine oil.

For some cars that have not been cleaned and maintained for a long time, have a long oil change cycle, have poor road conditions, or have driven 45,000 kilometers, a simple oil change can no longer keep the engine clean, so it is necessary to carry out comprehensive engine cleaning and maintenance.

It is very necessary that the oil has the functions of cleaning, cooling, lubrication, etc., and the sludge should be cleaned as soon as possible.

It is recommended to clean the car that has not been cleaned and maintained for a long time, the oil change cycle is longer than the draft, the road conditions are bad, or the car that has traveled 45,000 kilometers is recommended.

There is sludge inside the engine that needs to be cleaned up. Too much oil sludge will greatly reduce the heat dissipation capacity of the cylinder block, resulting in high oil temperature, reducing engine power, increasing oil flow resistance, and reducing oil flow, thereby affecting the lubrication effect of engine oil, blocking the oil circuit, resulting in a lack of lubrication between engine parts, and in serious cases, there will be burning tiles, holding shafts and other phenomena.

There are two ways to deal with engine sludge that needs to be cleaned inside the engine:

1.Use detergent to simmer. Pour the engine cleaner into the oil tank, idle for 5-10 minutes (if the engine has not been cleaned for a long time, the cleaning time can be appropriately extended), drain the old engine oil with the cleaning agent into the engine, replace the oil filter, and add new oil.

2.Disassemble the engine for cleaning. If there is too much sludge in the engine, it is better not to wash it.

According to the master of the repair shop, because there is too much sludge in the engine, if the sludge in the engine is cleaned at this time, there may be a large piece of sludge falling off, blocking the oil circuit of the engine or oil pump, and the consequences are serious. So as a last resort, we had to take the engine apart for cleaning.

Millions of car purchase subsidies.

Effective cleaning can extend the life of your accessories.

The residue of substances in the fuel injector, throttle, oil pipeline, spark plug, cylinder head, inner wall and other parts caused by insufficient combustion of gasoline in the cylinder, and then the black gum produced by the repeated high temperature action of the engine is called carbon deposit.

One of the reasons for carbon deposition is that the fuel is not completely burned and adheres to various parts of the engine, which can form carbon deposits over time. The main function of additives is to drill into the pores of carbon deposits with strong surface activity, destroy their structure, and gradually dissolve these carbon particles from the metal surface, and then discharge them through the exhaust gas after burning with the fuel at high temperature.

The increase in carbon deposits in the car will lead to insufficient combustion of the engine, resulting in an increase in fuel consumption and a long time when the car failure light is on.

Ways to slow down the formation of carbon deposits:

Use high-quality fuel. Because the main components of carbon deposits are wax and colloidal deposition in the fuel, the lower the colloidal content in the fuel, the better. But we can't change the quality of the fuel, but we can choose not to add unidentified cheap fuel.

2.Avoid driving at low speeds for long periods of time. If necessary, the high speed can be pulled at a regular time. The principle of removing carbon deposits at a high speed is to speed up the airflow, which can carry away a small amount of carbon deposits that are not firmly attached. The combustion temperature is increased so that part of the carbon deposits in the cylinder are burned.

Carbon deposition hazards. If the carbon deposit is not cleaned for a long time, the operation of the whole vehicle will be caused, the internal channel of the engine will be blocked by carbon deposit, the engine will be poor, and the occurrence of fuel consumption, abnormal engine noise, and unstable idle speed will occur, so as to reduce the power of the automobile engine, increase fuel consumption, and the combustion rate will be too low. If you don't clean up the carbon deposits in time, it will not only cause a certain degree of harm to the car caused by early slipping, but also the harm to the environment, modern society pays attention to energy conservation and emission reduction, and exhaust emissions must not exceed the standard, so we should pay attention to this problem.

Usually 5000 kilometers with effective PNF fuel additives to clean the overall oil circuit carbon deposits, a long time not to clean up the carbon deposits will cause the operation of the whole vehicle, so that the internal channel of the engine is blocked by carbon deposits, the internal fuel injection of the car is not smooth, so that the engine power becomes poor, thereby reducing the power of the car engine, increasing fuel consumption, and the combustion rate is too low.

Of course, it is necessary, in fact, it is a way to clean the inside of the engine by changing the key thick branch oil frequently, if there is a more professional engine cleaning, it will be better if you draft Min, stool shouting or pulling high-speed, are good choices.

There are many hazards of engine sludge, and it is still necessary to wash it, but cleaning engine sludge is also particular, and there are generally two countermeasures.

1. Use a cleaning posture ruler.

Pour the engine cleaner into the oil tank, idle for 5-10 minutes (if the engine has not been cleaned for a long time, the cleaning time can be appropriately extended), empty the old engine oil with cleaning agent in the engine, replace the oil filter, and add new oil.

2. Disassemble the engine for cleaning.

If there is too much sludge inside the engine, it is best not to wash, according to the master of the repair shop, because there is a lot of sludge inside the engine, if the sludge inside the engine is cleaned at this time, it is possible to make a large sludge fall off, and the sludge may block the oil passage of the engine, and it is also possible to block the oil pump, and the consequences are more serious. Therefore, the engine can only be disassembled for cleaning as a last resort.

Ways to prevent excessive sludge in cars.

1. According to the data, the impact of fuel on oil sludge will be greater than that of lubricating oil. Therefore, it is necessary to use high-quality fuel. Therefore, it is recommended that car owners go to genuine gas stations as much as possible when refueling, such as: Sinopec.

2. In the selection of lubricating oil, it is necessary to determine the type of lubricating oil according to the daily use of the vehicle. You should also always check the oil level of your car, and replenish it as soon as possible when it is insufficient, so as to reduce the pressure on the original oil and tung products.

Photo by Shi Lili) @2019