Oil filter, also known as oil grid. Used to remove dust, metal particles, carbon precipitates and soot particles in the oil to protect the engine.
Oil filter with full flow and split the points. The full-flow filter is connected in series between the oil pump and the main oil path, so that all the lubricating oil entering the main oil path can be filtered. Shunt flower and the main oil in parallel, only filter oil pump out part of the oil.