The location of each car is different, most of them are near the engine:
1. Open the engine compartment cover and confirm the position of the air filter. The air filter is generally located on the left side of the engine compartment, that is, above the left front wheel. You can see a square plastic black box, which is installed inside;
2. Under normal circumstances, various parts in the engine are lubricated by oil to achieve normal work. However, metal debris, incoming dust, carbon deposits oxidized at high temperatures, and some water vapor generated during the operation of the parts will be continuously mixed into the oil, and the service life of the oil will be reduced over time, which may affect the normal operation of the engine in serious cases;
3. Therefore, at this time, the role of the oil filter is reflected. Simply put, the function of the oil filter is to filter most of the impurities in the oil, keep the oil clean and prolong its normal service life. In addition, the oil filter should also have the characteristics of strong filtering ability, small flow resistance and long service life;

The role of the air filter is as follows:
1. When the engine is working, it needs to suck in a lot of air. If the air is not filtered, the dust suspended in the air is sucked into the cylinder, which will accelerate the wear of the piston group and the cylinder;
2. Larger particles enter between the piston and the cylinder, which will cause a serious "cylinder pulling" phenomenon, which is especially serious in a dry and sandy working environment;
3. The air filter is installed in front of the carburetor or the intake pipe, which plays the role of filtering out dust and sand in the air, and ensures that sufficient and clean air enters the cylinder.