Boosts octane rating. Cleaning since 1945. Use every fill up. Treats up to 15 gallons. A dirty engine and poor quality gasoline can lead to lost fuel economy, poor combustion, knocks and pings and power loss. Gumout Octane Booster when used with every tank can help: stop knocks and pings; boost octane rating. Treats up to 15 gallons (57 lt) of gasoline. Made in USA.
Add entire bottle to nearly empty gasoline tank, then fill tank with up to 15 gallons of gasoline. This product contains no alcohol and will not harm catalytic converters or oxygen sensors. Can be used with all unleaded, oxygenated and reformulated gasolines. Safe to use with other Gumout gasoline additives.
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