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An oxygenating power additive developed for gasoline and methanol alcohol fuels, Designed to extract the maximum level of horsepower from stock and modified engines, Contains 50% nitropropane and 50% Koolinalâ„¢ as a blending and cooling agent that resists detonation and pre-ignition, Dyno testing indicates substantial power increases may be obtained when using Klotz Nitro, Available in 16-fluid ounce cans, 10 per case, Made in the U.S.A.