Oxygenated Fuels and Alcohol Content

NOTE: Do not use fuels containing methanol in order to prevent damage and corrosion to the fuel system.

Oxygenated fuels contain oxygen in their chemical structure. The advantages that oxygenated fuels offer are improved octane quality, better combustion, and reduced carbon monoxide emissions. The most commonly used oxygenated fuels are ethanol (grain alcohol) and Methyl Tertiary Butyl Ether (MTBE). Ethanol is acceptable if it does not exceed 10% by volume. MTBE is permitted up to 15% by volume.