1993 Chevrolet Lumina Owner's Manual - Page 196

Service & Appearance Care I Gasolines for Cleaner Air Your useof gasoline with detergent additives will help prevent deposits from formingin your engineand fuel system. That helps keep your engine in tune and your emission control system working properly. It's good for your part vehicle, and you'll be doing your for cleanerair. Many gasolinesare now blendedwith materials called oxygenates. General Motors recommendsthat you use gasolines withthese blending materials, such as MTBE and ethanol. By doing so, you can help cleanthe air, especially in those parts of the country that have high carbon monoxide levels. In addition, some gasoline suppliersare now producing reformulated gasolines. These gasolinesare specially designed to reduce vehicle emissions. General Motors recommendsthat you use reformulated gasoline. By doing so, you can help cleanthe air, especially in those parts of the country that have high ozone levels. You should ask your service station operators if their gasolines contain detergents and oxygenates, andif they have been reformulatedto reduce vehicle emissions. Fuels in Foreign Countries If you plan on driving inanother country outside the U.S. or Canada, unleaded fuel may hard to find. be Do not use leaded gasoline. you use If even one tankful, your emission controls won't work or atall. With well continuous use, spark plugscan get fouled, the exhaust system can corrode, and your engine oil can deteriorate quickly. Your vehicle's oxygen sensor will be damaged.All of that means costly repairsthat wouldn't be covered by your warranty. I