Do I need to clean the engine when replacing the oil?

Do I have to flush the engine when replacing the oil? At many forums, it is possible to find heated discussions on this issue. Supporters of both points of view are confident in their rightness to one hundred percent, giving all sorts of arguments. But what about the usual car owner who wants to just decide the question, is it worth cleaning the engine before changing the oil or not? For example, in the dealer centers are sure that it can not be done in any case.

To wash or not to wash and what for it to do?

Unequivocal answer, the car owner, unfortunately, can not be found. The fact is that there are many factors that influence this process. In the car dealerships you can find such washes that promise to clean the engine in a matter of minutes. But it is better to avoid such methods.

In general, flushing in some cases may be necessary, but in others - not. For example, if the maintenance history of the machine is clean and all the necessary replacements are carried out in a timely manner, then there is no need to flush the engine.

But it happens when it is desirable or even necessary:

• If the viscosity of the oil during the replacement is changed to less, for example, from synthetics to mineral water;
• You can even have no doubt whether you need to clean the engine before replacing the oil with another brand - the answer is obvious;
• Of course, after a motor repair, replacement is also needed;
• If the unit is clogged, for example, there was a liquid of antifreeze or fuel.

Harm from washing

If the car was bought in the showroom, it does not require a washing procedure for the motor. Also if the motorist always used only high-quality oil, you can not even think about whether you need to flush the engine when changing the oil. The fact that the composition of modern mixtures include various additives, which are designed just for cleaning the motor. Therefore, all contaminants are washed off with the used composition.

Moreover, if you still wash the unit, it can even be damaged, since it is known that up to ten percent of the mixture usually remains in the pan. But with the application of the quick miracle washing mentioned above, the creators of which promise a magical result in a few minutes, it mixes with the used oil remaining in the engine and the latter qualitatively changes its structure. This is especially true of the viscosity characteristics.

As a result, this mixture remains in the engine, and pouring fresh deteriorates and its quality. It will not be noticeable immediately, so the car owner can then not even compare the breakdown with the engine washing. But, unfortunately, this can happen.

Therefore, it should be borne in mind that in some cases, apart from the useless waste of money, time can also worsen the state of the "heart" of your car.

When flushing may be required

But there are situations when there is no doubt about the question of whether the engine should be flushed when replacing the oil . So, if a car is bought not a new one but a used one (of course, the exception may be cases of purchase from good friends and relatives whose use of cars you know for sure), then the washing will not be superfluous. However, in this case it is worthwhile to think about how to produce it. After all, an incorrect or frivolous approach can ruin a motor.

Disassembly of motor

So, you can flush the engine in several ways. The mechanical part of the unit is dismantled and hand washed all parts with kerosene, gasoline or solar oil. This is the best way when all the engine elements are visible. But it will take a lot of time and it will not be worth it. In addition, not all motorists will want their motor dismantled.

15-minute

Often used the famous so-called "fifteen minutes", which is simply poured into the unit and turn it on at this time. Then the whole used mixture is drained. However, if you need to flush the engine when replacing the oil in this way, the majority of car owners cause justifiable doubts.

Two-day

Another way, which is no longer popular, is the same washing as the previous method, but it lasts not fifteen minutes, but one or two days. The washing oil is poured into the car , and the car owner goes to it for a while, then comes to replace it. The method is inconvenient, since the driver has to limit himself when driving and spend a lot of time visiting a car dealership.

Dangers of 15-minute

Previously, the method of "double-day" used, as already described, was extremely inconvenient. This inspired manufacturers for the very fifteen minutes, which today are filled up with auto shops.

Many tests carried out proved the effectiveness of the method. The engine was really cleared! So what's the point and what's the catch? The question, whether it is necessary to wash the engine before changing the oil, can be removed once and for all!

But, unfortunately, not everything is so unambiguous. What is the result of such intensive purification? The fact is that active detergents have a very high concentration. Therefore, the process of destroying the oil seals is accompanied by an excellent cleaning of the contaminated oil. Manufacturers have foreseen this, and in the composition of 15 minutes, a chemical additive was added, which, when in contact with rubber, creates a protective protective layer from the alkaline effect. In this case, to metal deposits, as claimed by the developers, the tool is categorical. And this is a proven fact.

But, unfortunately, there is a more unpleasant moment. Operation with a low-quality oil often leads to the formation of large deposits on the pallet. They themselves do not carry any danger. However, fifteen minutes can play with this bad joke. Many large deposits can not be processed immediately. As a result, what was accumulated on the bottom remains in the engine in a dissolved form with rinsing residues, which are then mixed with the new oil. It remains only with bitterness to imagine what will happen to the engine, when such contaminated oil will work out its resource. Unfortunately, there were cases when, after three flushes with fifteen minutes, the engine of the machine, which had previously been operated on cheap raw materials, came into disrepair and was no longer subject to repair.

Now you can take a fresh look at the question whether you need to clean the engine when changing the oil.

If your situation is close to that, then you must clean the engine manually, completely cleaning the pan. This approach will be correct and safe for the motor. If, because of the high cost or for any other reason, this is not possible, that is, another good way to clean the power unit. And it does not consist in the chemical method, but in the use of ordinary high-quality oil.

Washing with conventional oil

If the question of whether to clean the engine before replacing the oil, the opinion of experts converge and the answer is positive, then you can use the following method. The motor is turned on and heated to a certain temperature. Then they muffle, drain the oil, fill a new high-quality and change the oil filter. The next two or four days, you need to drive in run-in mode to prevent the unit from being overloaded.

After that, the procedure is repeated and twice more is used for the newly filled oil than for the conventional mode.

If you came to the conclusion that flushing the motor is necessary, then seriously approach the question of what can be flushed before replacing the oil in order to eventually not spoil it. Agreeing to high-speed facilities, do not forget about the pitfalls that can expect your car in the future.