The function of the oil filter is to filter out debris, colloids and moisture in the oil, and to deliver clean oil to each lubricating part.
In order to reduce the frictional resistance between the relative moving parts in the engine and reduce the wear of the parts, the oil is continuously transported to the friction surface of each moving part to form a lubricating oil film for lubrication. The engine oil itself contains a certain amount of colloids, impurities, moisture and additives. At the same time, during the operation of the engine, the introduction of metal wear debris, the entry of impurities in the air, and the production of oil oxides gradually increase the number of impurities in the engine oil. If the oil is not filtered and directly enters the lubricating oil circuit, the debris contained in the oil will be brought to the friction surface of the moving pair, which will accelerate the wear of the parts and reduce the service life of the engine.
