Without cleaning, deposits can lead to hard starts, lost acceleration and rough idling.  STP^® Fuel Injector & Carburetor Treatment is specially formulated to maintain clean performance of fuel injectors and carburetors by helping to prevent the accumulation of deposits. It’s made with jet fuel, a high-quality carrier of active ingredients.

• Use regularly when you fill up your tank.
• 5.25 fl. oz. bottle treats up to 21 gallons of gasoline.
• 12 fl. oz. bottle treats up to 28 gallons of gasoline.

STP^® Fuel Injector & Carburetor Treatment + Upper Cylinder Lubricant is safe for any gasoline engines.Will not void warranty.