Our top-performing octane booster is the Royal Purple Max Boost, designed to increase horsepower and stabilize fuel while reducing knocking and pinging. This racing formula raises octane rating up to ...

Fuel comes in different grades based on octane level at gas stations. Only some performance engines require Premium fuel for the best power output, fuel efficiency, and engine function. Are you ...

87 octane gasoline, often called "regular" gas, is one of the most commonly used fuels in the United States. But what gives it that 87 rating is a word you've probably heard a time or two: Ethanol.