Liquid Performance Complete Fuel System Cleaner is an advanced combustion chamber detergent which is highly effective for all types of fuel system deposits. It provides superior intake valve deposit control, port fuel injection and carburetor detergency. Liquid Performance Complete Fuel System Cleaner reduces combustion chamber deposits and eliminates the cause of pre-ignition, reduces run-on and rapidly cleans up carburetors, fuel injectors, intake valves and manifolds to restore your vehicles original power, performance and fuel mileage. 1 ounce treats up to 10 gallons of fuel.