STP

STP Super Concentrated Fuel Injector Cleaner is a high-strength additive that dissolves carbon, gum, and varnish from fuel injectors to help restore throttle response and engine smoothness. Designed as a potent, jet-fuel–based treatment, this 5.25 fl oz bottle delivers a concentrated dose of detergents...

STP 1 Tank Tune Up is a concentrated fuel system cleaner and fuel additive designed to deep-clean injectors, intake valves, and combustion chamber deposits in a single 12 fl oz treatment. This concentrated formula from STP delivers the brand’s strongest cleaning blend for gasoline...

STP Gas Treatment is a concentrated fuel-system cleaner and water dispersant designed to dissolve carbon, gum and varnish while helping protect fuel lines from freeze. Keep modern engines running smoothly by treating gasoline with a targeted cleaner that addresses buildup and moisture in the...

STP High Mileage Fuel Injector & Carburetor Cleaner and Carburetor Treatment is a concentrated, jet-fuel–based formula that helps remove fuel-system deposits and lubricates upper-cylinder components in gasoline engines. Modern engines are engineered for efficiency, but deposits from fuel and combustion can accumulate on injectors,...

STP Octane Booster is a 2-in-1 gasoline additive that raises octane and cleans the fuel intake system to help restore lost power and smoother acceleration. When gasoline loses efficiency or your engine starts to ping, a targeted fuel treatment can help recover performance without...

STP Water Remover is a concentrated, all-season fuel additive that extracts water from gasoline, helps prevent fuel-line freeze, and fights corrosion to support reliable engine starts. This small but powerful bottle contains a formulated fuel treatment designed for cars and trucks. It dissolves and...