DPF Forced Regeneration Fit for Paccar ,Ditroit. 【Compatible with PACCAR, DITROIT Trucks & engine 】. DPF Regeneration is used to clear PM (Particulate Matter) from the DPF filter through continuous combustion oxidation mode (such us high temperature heating conbustion, fuel additive or catalyst reduce PM ignition conbustion) to stabilize the filter perfornance.