1994 Buick Roadmaster Owner's Manual - Page 228

MTBE is "methyl tertiary-butyl ether." Fuel that is no more than 15%MTBE is fine for your vehicle. Ethanol is ethyl or grain alcohol. Properly-blended fuel that is no more than 10%ethanol isfine for your vehicle. Methanol is methyl or wood alcohol. Gasolines for Cleaner Air Your use of gasoline with deposit control additives will help prevent deposits from forming your engine and in fuel system. That helps keep your engine in tune and your emission control system working properly. It's good for your vehicle, and you'll be doing your for part cleaner air. Many gasolines are now blended with oxygenates. General Motors recommends that use,gasolineswith you as By these blending materials, such MTBE and ethanol. doing so, you can help clean the air, especially in those parts of the countrythat have high carbon monoxide levels. In addition, some gasoline suppliers are producing now reformulated gasolines. These gasolines are specially designed to reduce vehicle emissions. General Motors recommends that you use reformulated gasoline. By doing so, you can help clean the air, especially in those parts'ofthe country that have high ozone levels. You should ask your service station, operatorstheir if gasolines contain deposit control additives and oxygenates, andif they have been reformulated to reduce vehicle emissions. I NOTICE: Fuel that is more than methanol is bad for 5% your vehicle. Don't use it.It can corrode metal parts in your fuel system and also damage plastic and rubber parts. That damage wouldn't 5% be covered under your warranty. And even at or less, there must be "cosolvents" and corrosion preventers in this fuel to help avoid these problems.