Cataclean For Diesel Engines Works As A Fuel And Exhaust System Cleaner By Dissolving Carbon And Soot Deposits In Various Components, Including Fuel Injectors, Egr Valves, Oxygen Sensors, Catalytic Converters, And Diesel Particulate Filters Dpfs. When It Combusts, It Creates An Acidic Vapor That Travels Through The Exhaust System, Cleaning These Parts And Helping To Restore Engine Performance, Improve Fuel Economy, And Reduce Emissions, Restores Performance. It Also Reduce The Particulates In Diesel Particulate Filters, Preventing Clogging.