Kleenoil Filtration has been keeping engine and hydraulic oil clean for more than 25 years using sub-micron by-pass filtration. Kleenoil By-Pass Filters remove particles to below 1 micron in size and all water. This is all accomplished in the same filter cartridge with no complicated wiring or moving parts. Instead of reducing your service intervals to cope with the added soot generated by EGR; let Kleenoil extend your service interval by keeping your oil clean while protecting your equipment and putting money in your pocket. Kleenoil Units carry a lifetime warranty which can be transfered from truck to truck as they are replaced.