Liqui Moly Carburetor & Valve Cleaner removes deposits from the combustion chamber, intake valves and spark plugs. A cleaner engine runs better, so you'll use less gas, emit fewer exhaust pollutants and protect the fuel system against corrosion. For better performance and efficiency, just add it to your tank every time you fill up. One 300 ml bottle treats up to 70 liters (18 gallons) of fuel. Safe for catalytic converters and turbochargers.