NOS Octane Boosters - OCTANE BOOSTERS One simple treatment can boost the octane rating in your unleaded gas by 2-7 points! Effectively cures any engine knocks or pings the you may be experiencing One 12-oz. bottle per 16 gallons of gas is all it takes! Simply add the octane booster to a full tank of gas. Won't harm your catalytic converter or O2 sensor. Recommended for all high-performance import and domestic engines, including 2-stroke and marine. Also works on gas-engine lawn and farm equipment. Click on item SKU# for additional information. Applications: All Makes All Models, All Makes All Models