The Penray Total Diesel Fuel System Cleaner dissolves and prevents the formation of asphaltenes in diesel fuel, while cleaning other deposits and contaminants from the fuel system including fuel tanks, fuel filters, fuel injectors and lines, and preventing their recurrence. Benefits of this product include greatly extended fuel filter life, as well as that of injectors and other precision fuel system components. This cleaner also has solvents and detergents that dissolve deposits and loosen debris so it can be captured by the fuel filter before it can reach the precision inner workings of fuel injectors and other fuel system components.