Features: 1) Package: 354mL/can 2) Validity: 3 years Petrol treatment can be directly added into the fuel to clean automatically fuel transmission tubes, carburetors, fuel injection systems, cylinders, and pistols. It can also remove greasy dirt, gum, and carbon deposits, decrease corrosion of the transmission parts, so as to save fuel and reduce exhaust emission. It is advised to add the product every 10,000km.