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If you really love your diesel truck, and want to make it last forever, your next investment should be in bypass oil filtration. Clean oil just makes sense. While your factory filter cannot effectively remove particles smaller than 25 - 30 microns, the FS2500 bypass filter is 98% efficient down to 1 micron. Oil change intervals can be safely extended while offering better engine protection and reduced wear. Bypass filtration is especially important on engines with HEUI fuel injection systems where engine oil is used to operate the fuel injectors. The finest tolerance anywhere on an engine are in the fuel injector. Getting the carbon out will greatly extend injector life on HEUI applications such as the 6.0L and 7.3L Ford applications. The FS2500 diesel bypass filter is available for all Duramax, Powerstroke, and Cummins. We offer complete kits as well as replacement filter elements. Long live engines.