New oil filter every oil change

Remember: Oil filters are wear parts that must be changed regularly. Regularly means at every oil change. A clogged oil filter allows engine oil through the overpressure valve into the engine, bypassing the oil filter, but contaminated engine oil accelerates wear on the entire engine - especially the piston and cylinder surfaces, camshaft and crankshaft. In the standard case, engine oil enters through holes and channels to the corresponding lubrication points in the engine block and crankshaft, in a similar way it also enters the camshaft (s) in the cylinder head.

For most other lubrication points, such as the piston and valve train, conventional lubrication by injection caused by the rotation of the crankshaft and camshaft is sufficient: both shafts swirl in their environment the oil escaping at the lubrication points. During its systematic journey through the engine, the oil not only retains the mobility of all internal components, but also removes most of the excess heat that is formed in the bearing journals and during each operating cycle. On the way back to the crankcase, the work of the oil is not so intense: it flows back into the crankcase through special return channels. Here oil for a short while «calms down» and, before being pressurized again, cools down to about 75°C.