Power Foam Engine Cleaner & Degreaser (APF) AMSOIL Power Foam removes gum, varnish and carbon deposits for more efficient fuel economy and improved overall engine performance. AMSOIL Power Foam cleans intake valves, intake manifolds and throttle plates to keep the combustion intake system running at peak efficiency. Effective in both two-cycle and four-cycle engines, AMSOIL Power Foam eliminates engine ping and keeps carburetors and injector systems properly tuned. AMSOIL Power Foam is safe for fuel injectors, catalytic converters and emission control devices. It will not damage seals, gaskets, rubber or plastic materials commonly used in gasoline engines. AMSOIL Power Foam contains a powerful foaming agent and special high boiling solvents that penetrate rust and grease. It cuts through rust so bolts can be loosened or tightened easily and washes clean, leaving no residue to attract dirt. Power Foam also helps reduce pollution caused by dirty, rough-running engines. See Pricing Information or Place an Order Package sizes include: 18-oz. Spray Can 18-oz. Spray Cans (case of 12) Performance Features Removes gum, varnish and carbon deposits Suppresses engine ping Cuts through rust and grease Helps improves fuel economy Reduces Pollution Frees stuck choke mechanism DIRECTIONS Run engine to normal operating temperature and remove air cleaner assembly. While engine is running, spray entire can of foam directly into intake. Turn off engine and allow to sit for 5-10 minutes. Restart engine and drive to blow out deposits. RECOMMENDATIONS Avoid contact with hoses. To prevent the dissolving of paint, do not overspray. AMSOIL Power Foam is not recommended for use in diesel engines.