In car maintenance, car oil must be replaced regularly, but some netizens will ask how to repair the oil filter if it is damaged?

The full name of the machine filter is the oil filter, which can remove impurities such as dust, metal particles, carbon deposits and soot particles in the oil, and supply clean oil to the crankshaft, connecting rod, camshaft, supercharger, piston ring, etc. to lubricating, cooling, and cleaning, thereby extending the life of these components. If the engine is the heart of the car and the oil is the blood of the car, then the filter is the liver and lungs of the car.

Why should the filter be replaced regularly?
After the oil filter is used for a period of time, a lot of sludge and metal debris will accumulate on the filter element, the filtering efficiency will decrease, and the oil pressure passing through the filter will also be greatly reduced. When the oil pressure is reduced to a certain level, the filter bypass valve will open, and the unfiltered oil will enter the oil circuit through the bypass, and the carried impurities will increase the wear and tear of the parts. Therefore, the filter needs to be replaced regularly.
Under normal circumstances, the oil filter needs to be replaced every 8000km of frequently used cars; if the driving environment is dusty and harsh, the replacement cycle should be shortened, and it is recommended to replace it every 5000km.

Do I have to change the filter when I change the oil?
Every time you change the oil, you must replace the oil filter with qualified quality. The reasons are as follows:
1. If the filter is not replaced for a long time, the filter will be blocked due to the deposition of dirt, and the pollutants will flow directly into the engine, aggravating the wear of the parts;
2. Just change the oil without replacing the filter, then the pollutants in the old filter will re-enter the fresh oil to circulate, making the oil change meaningless.

It is not difficult to distinguish between true and false oil filters. We must remember the following characteristics of high-quality oil filters:
1. Appearance:
1）. The font on the surface of the shell is clearly printed, and the surface paint texture is good;
2）. A protective bag is installed before leaving the factory, and the interface is lubricated with butter to protect the seal in good condition;
3）. The sealing material of the gasket is good, and the rubber parts are regular.
2. Structure:
1）. There is a bypass valve inside to ensure that there is a sufficient amount of oil supply in any state;
2）. Equipped with a backflow suppression design to ensure that there is oil in the machine filter for the next start, reducing cold start wear.
3. Material:
1）. The material density of filter paper is moderate to ensure excellent filterability and service life;
2）. The metal oil-passing net in the filter element has the standard form to ensure the oil passing through.

Fake and inferior oil filters not only affect the normal oil supply and lubrication of the oil pump to the engine, but also cause oil leakage, poor engine heat dissipation and other faults at the interface of the main oil passage due to poor sealing, and even cause cylinder explosion in severe cases.