Engine oil lubricates all the moving and functional engine parts. As a result of combustion particles of dirt and combustion residue such as soot escape into the engine oil. They contaminate the oil and make it more viscous. This means that the oil supply is not adequate and protection from corrosion can no longer be ensured. As a result engine performance is impaired and fuel consumption increases. In the worst case the engine could be damaged. Increasing engine performance and at the same time reducing fuel consumption places high demands on engine building. Only clean oil can ensure that engine performance remains consistent. This is where the full effectiveness of MANN-FILTER is really brought to bear. MANN-FILTER Oil Filters reliably purify oils from dirt and solid particles such as dust abraded metal carbon deposits and soot particles. They are used with engine oil hydraulic oil and gear oil.