The filtration of oil is an essential process to ensure that machinery, engines and hydraulic systems are working effectively and efficiently. It is about filtering impurities like dirt, water and metals from oil so the oil keeps operating at peak performance. In an age where machines work in more and more extreme conditions, it is important to know about Oil Filtration for businesses that depend on lubrication systems. The present work provides an in-depth review of oil filtering involving its significance, types, methods, advantages, difficulties and current advancements in the area.

Oil filtration is the process of purifying oils by eliminating contaminants that contribute to the lower quality of the oil. There are several ways contaminants get into the oil (from wear, from the environment, from poor oil-change practices, etc). The objectives of oil filtration are to improve the performance of the oil while protecting the mechanical equipment and increasing its service life.