1993 Cadillac Eldorado Owner's Manual - Page 274

What about gasoline with blending materials that contain oxygen, such as MTBE or alcohol? MTBE is "methyl tertiary-butyl ether." Fuel that is no more than15% MTBE is fine for your car. Ethanol is ethyl or grain alcohol. Properly-blended fuel that no more is than 10% ethanol is fine for your car. Methanol is methyl or wood alcohol. r NOTICE: Fuel that is more than 5% methanol is bad for your vehicle. Don't use it. It can corrode metal parts your fuel systemand in also damage plastic and rubber parts. That damage wouldn't be covered under your warranty. Andeven at 5% or less, there must be 6Ccosolvents" corrosion preventers this fuel to help and in avoid these Droblems. 1 Gasolines for Cleaner Air Your use of gasoline with detergent additives will help prevent deposits from formingin your engine and fuel system. That helps keep your engine in tune andyour emission controlsystem working properly. It's good for your vehicle, and you'll be doing your part for cleaner air. Many gasolines are now blended with materials called oxygenates. General Motors recommends that use gasolineswith these blending you materials, such asMTBE and ethanol. By doing so, you can help clean the air, especiallyin those partsof the country that have high carbon monoxide levels. In addition, some gasoline suppliers now producing reformulated are gasolines. These gasolines are specially designed to reducevehicle emissions. General Motors recommends that use reformulated you gasoline. By doing so, you can help clean the air, especially in those parts of the country that have high ozone levels. You should ask your service station operators their gasolines contain if detergents and oxygenates, and if they have been reformulated to reduce vehicle emissions. 260