Give your engine a performance boost with this upper engine cleaner spray, designed to reach where liquid fuel additives can't. Applied through the throttle body or carburetor, this treatment dissolves stubborn carbon deposits in intake valves, combustion chambers, and air induction systems — especially important in GDI (Gasoline Direct Injection) engines. More than just a cleaner, this spray also lubricates upper engine components including throttle plates, bushings, and cylinders. It's safe for oxygen sensors, coated engine parts, and all types of 2- and 4-stroke gasoline engines. Ideal for use before long-term storage, this product also serves as an effective fogging oil to preserve engine internals. Trusted by technicians and DIYers, it helps your engine run smoother, cleaner, and more efficiently.