Use Sea Foam Spray to safely clean and lubricate critical upper engine areas where fuel additives can't reach. Unlike tank additives, Sea Foam Spray's direct cleaning concentration works through a gas engine's upper air intake to clean harmful residue and deposit buildup from intake runners, intake valves, and combustion chamber areas. Help your engine run cleaner and last longer!r Cleans intake valve and chamber depositsApply through gas fuel-injection throttle body or carburetor throatCritical for modern Gasoline Direct Injection (GDI) engines where fuel cleaners canu2019t reachLubricates throttle plates, bushings and upper cylindersUse to protect intake and cylinder areas during storageExcellent for fogging all types of gasoline intakesDoes NOT contain harsh chemicals or detergentsSafe for coated parts and oxygen sensorsFor all types gasoline engines, 2- and 4-stroke