DPF Forced Regeneration & DPF Reset Fit for Paccar ,Ditroit engines ;. 【Work for PACCAR, DITROIT Trucks】. 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.