All engines are calibrated to run on fuel with a specific octane rating. If the octane is too low, fuel can ignite early, causing knocks and pings. In vehicles with knock sensors, lower octane gas can retard timing, reducing performance and fuel economy. Gumout Octane Booster raises the octane level in gas to restore proper combustion and performance. • Increases octane rating points • Improves horsepower and lubricates upper engine • Eliminates knocks, pings and hesitation • Safe for use in turbo & supercharged vehicles • Helps reduce emissions • Application: For gasoline only cars, trucks, RVs, ATVs and farm equipment.