An Oil filter is a mechanical device that removes contaminant, dirt, and unburned fuel from circulating without interrupting the lubricating process. Oil filters are applicable in different types of hydraulic machinery. The device is used in internal combustion engines both on- and off-road motor vehicles. Great important of oil filters in modern combustion engines that allow first-class lubrication for seamless operation.

The Oil filters allow just the circulation of fresh oil into the engine and it keeps the dirt. This is why the oil filter needs to be treated or change within some period of time.
An oil filter is equipped on other vehicle hydraulic systems, such as automatic transmissions, and power steering. Gas turbine engines, such as jet also uses oil filter. In short, on the filter is used on a car, truck, motorcycle, boat, aeroplane, tractor, etc. they all use the component for purifying oil and removing dirt from the oil before circulating.