If you’ve been around powersports for any length of time, you’ve probably heard a lot of misinformation when it comes to choosing fuel. You might hear things like “high octane fuels burn slower,” or “motors that aren’t built for high octane can’t benefit from high octane fuels.”

There is a lot of debate over alcohol blended fuel octane ratings, but due to the limits of standardized testing equipment, you cannot measure the octane of alcohol. The ASTM (American Society for Testing and Materials) only allows the use of carburetors on Cooperative Fuel Research Engines (CFR). Of course, these…