Why change engine oil: tells Gennady Yagupov

To extend the service life of an engine, it is necessary to monitor its technical condition. One of the key points is to change the oil in the engine. The reasons for the necessity, frequency and ways of changing the oil are given in this article.

1. What causes the need for an oil change.

Engine fluid has a protective function, it helps prevent premature wear of mechanisms by reducing friction by enveloping parts – consequently increasing the life of the engine as a whole. Using a car causes temperature fluctuations inside the engine system, the oil reduces this effect, preventing parts from critically overheating or over freezing. Over time, the brake fluid begins to lose its protective properties – viscosity decreases, there are impurities in the form of carbon deposits and soot, which are formed as a result of engine operation. In this case, fuel and lubricants not only do not help the car, but also have a negative effect, slowly putting it out of operation. That is why it is necessary to change the engine fluid in time.

2. Is an untimely oil change dangerous?

In a single case violation of the terms of oil and lubricants change may not affect the characteristics of the machine, but the system’s untimely change will lead to disastrous results.

Formation of a large number of deposits and impurities, which is associated with the decaying components of oil, leads to the fact that the engine loses power, while increasing the number of emissions of harmful substances.

Loss of viscosity and oil leakage cause parts to wear faster as a result of more friction against each other as well as an increase in the temperature between them.

On the other hand, the types of oil that are on the contrary thicken – make it difficult for the engine to work, in particular its start-up, the oil does not circulate well, which leads to engine system failure.

Turbocompressor or rotor failure – when operated in a negative environment, severe grooves and cracks appear on the compressor shaft and bearings, significantly reducing their operating life. Fluid deposits will lead to clogging of the compressor unit’s lubrication passages, which will cause the unit to jam. These problems are not all the failures that can result from obsolete oil, so a timely change of lubricants will help avoid costly repairs.

3. The oil filter and the need to replace it

Despite the belief of many that changing the filter is a marketing ploy, experts say the opposite. The filter is necessary to collect impurities – the engine during operation forms soot, oil collects this plaque and passing through the filter leaves it there. Over time, the filter holes get very dirty, which does not allow the oil to be cleaned enough – as a result, the oil quickly becomes unusable and the engine system quickly wears out.

4. Oil level monitoring and oil change frequency

The oil change time for each car is strictly individual, usually set by the vehicle’s manufacturer. However, there is a certain recommended time interval. Experts advise to change oil at least once a year.

It is worth considering the fact that if the car has not been operated for a long time, condensate is formed in the oil, which oxidizes and increases the risk of destruction of elements.

When changing the oil it is worth taking into account:

  • The condition of the car – a new car needs to be replaced after about 3 – 5 thousand kilometers of mileage;
  • Driving style – driving at full power quickly wears out the resource of fuel and lubricants.
  • Fuel quality – poor combustion of low-quality fuel mixtures creates a large number of impurities, which mix with the fluid, preventing correct operation of the engine
  • Chemical basis of oil – synthetic oils have the longest service life – 10 – 15 thousand km, semi-synthetic – 8 – 9 thousand km, mineral oils – 5 – 7 thousand km
  • Manufacturer’s recommendations – the oil manufacturer’s instructions will necessarily prescribe the recommended period when the oil must be replaced.

5. How to change the oil

To change the oil in the engine will need a flat surface and heated car, ideally the vehicle, which ply around the city for 30-40 minutes.

It is necessary to remove protection from the engine, unscrew the oil filler cap, filter, then remove the drain plug from the bottom of the car. Then you need to wait until the fluid drains into a pre-prepared container.

When replacing the filter, it is necessary to lubricate the sealing wheel, to ensure tight contact with the engine system. Then you fill in the fluid at the mark min, wait 10-15 minutes and refill the required amount, overflow can be avoided by using the dipstick. Car is started, and the leakage is checked. If there are no problems, you can begin vehicle operation.

For a faster oil change use a self-contained oil pump – its functions include independent pumping of fluid through the dipstick.

6. Engine flushing

The procedure is carried out when changing the manufacturer, chemical base, viscosity of the fuel oil. At the stage of filter change it is necessary to pour in a special liquid for flushing, start the engine for 10-15 minutes, then drain and pour in the necessary amount of oil.

Compliance with all recommendations will increase the life of the engine and the operation of the car as a whole. Be sure to use high-quality fuel and lubricants, the economy is not always justified.


As we see, it is necessary to change the oil on time, and better a little earlier. And it is worth noting that changing the oil is a fairly simple procedure, but you need to know exactly what you need to pour and spend a little time. It is easier to contact a professional service, which will cope with the task much faster. Site

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