Use every 3,000 miles. Cleans: intake valves, fuel injectors. Treats up to 21 gallons. Maximizes fuel economy. Cleaning since 1945. Cleans fuel injectors and intake valves. Maximizes fuel economy. Prevents futures deposit build up. Restores lost horsepower. Gumout concentrated fuel system cleaner. Use of a low quality discount gasoline can reduce your engine's performance. Your vehicle may experience poor fuel economy, lost horsepower, hesitation, and rough idling. Gumout concentrated fuel system cleaner helps to: clean the fuel injectors and intake valves. Maximize fuel economy. Prevent future deposit build up. Restore lost horsepower. This product contains no alcohol and will not harm catalytic converters or oxygen sensors. Can be used with all gasolines. Safe to use with other Gumout fuel additives. Treats up to 21 gallons (80 lt) of gasoline. Made in USA.

Add entire bottle to nearly empty gasoline tank, then fill tank with up to 21 gallons of gasoline. For best results, do not refill tank until near empty.

Harmful or fatal if swallowed. Combustible. Contains petroleum middle distillates. Prolonged and repeated skin contact may cause drying of skin. Precautionary measures: Keep away from heat and flames. Avoid breathing of mists and vapors. Use only in well ventilated areas. Avoid repeated and prolonged skin contact. Wash thoroughly after handling. First Aid: If swallowed, do not induce vomiting. Call physician immediately. If inhaled, breathe fresh air. For skin or eye contact, wash thoroughly with water. Keep out of reach of children.