Filter will remove particles as small as cigarette smoke particles. This means that wear debris and dirt smaller than the clearances in the system are removed. Thus normal wear is greatly reduced. Components will last longer, 2 - 5 times longer. By removing oxidation particles, iron and moisture, the catalysts of oil oxidation are greatly reduced. Oil can be used 2 - 5 times longer. Filter will provide continuously clean oil. 8ea/cs (old#1806-04).