Oxygenated Fuels and Alcohol Content

NOTE: Do Not use fuel that contains more than 5% methanol. Use of a fuel (gasohol) that contains more than 5% of methanol can corrode metal fuel system components and damage plastic and rubber parts.

The oxygenated fuels contain oxygen in the chemical structure. The advantages that the oxygenated fuels offer are an improved octane quality, a better combustion, and reduced carbon monoxide emissions. The most commonly used oxygenated fuels are ethanol (grain alcohol) and MTBE (Methyl Tertiary Butyl Ether). Ethanol is acceptable if the ethanol does not exceed 10 percent by volume. The MTBE is permitted up to 15 percent by volume. Another type of fuel oxygenator is Methanol, which is permitted up to 5 percent by volume.