Berryman 2616 B-12 Chemtool Total Fuel System Clean-Up - 15 oz.
Formulated for vehicles that have not had regular fuel system maintenance. Uses HEST and powerful detergents to maximize one-tank cleaning of intake valves, fuel injectors, and combustion chamber. Dissolves gum, varnish, and carbon deposits in the entire fuel system to help restore peak performance. Improves starting, drivability and gas mileage. Catalytic converter and oxygen sensor-safe.