This high powered cleaner for diesel particle filters is a special diesel solution which is used to clean the DPF filter. DPF FLITER NEEDS REMOVED FROM VEHICLE AND LEFT TO SOAK IN THIS DPF CLEANER THIS IS THE PROPER WAY TO CLEAN A DPF FILTER WITH AMAZING RESULTS bottle contains 1 litre solves and removes all soot deposits and residues Dissolves contaminants in diesel particulate filters Increases fuel efficiency increses engine performance extends life of DPF filters