This STP Complete Fuel System Cleaner contains the highest level of detergents of any STP formula. It helps clean your entire fuel system to restore its optimum operating condition. The advanced formula helps clean fuel injectors, carburetors, intake valves and ports, combustion chambers, cylinder heads and piston tops. It contains jet fuel, a high-quality carrier of active ingredients. STP Complete Fuel System Cleaner, 5.25 oz. Cleans your entire fuel system. Restores its optimum operating condition. Helps clean fuel injectors, carburetors, intake valves and more. Contains jet fuel

STP Oil Treatment fights friction to help protect against engine wear. This high-viscosity formula, complete with anti-wear agent ZDDP (Zinc Dialkyl Dithiophosphate), is specifically formulated to help fight metal-to-metal friction and helps reduce oil consumption.. Contains zinc anti-wear agent ZDDP that fights metal-to-metal friction. Reduces oil consumption. Lubricates moving engine parts by providing a thicker cushion between moving engine parts. Scientifically engineered for Conventional or Synthetic Oils. High viscosity formula can be used for all cars, light trucks and SUV's