What about the oil filter?

The function of the oil filter is to filter out harmful impurities in the oil from the oil pan and supply the crankshaft, connecting rod, camshaft, supercharger, piston ring, and other movements with clean oil to lubricate, cool, and clean. thereby extending the life of these components. The oil filter, also known as the machine filter, is located in the engine lubrication system. The upstream of the filter is the oil pump, and the downstream is the parts in the engine that need to be lubricated. To reduce the frictional resistance between the relatively 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.