1993 Pontiac Trans Sport Owner's Manual - Page 219

Service & Appearance Care Gasolines for Cleaner Air In addition, some gasoline suppliers are Your use of gasoline with detergent additives will help prevent deposits from now producing reformulated gasolines. forming in your engine and fuel system. These gasolines are specially designed in That helps keep your engine tune and to reduce vehicle emissions. General your emission control system working Motors recommends thatyou use properly. It's good for your vehicle, and reformulated gasoline. By doing so, you you'll be doing yourpart for cleaner air. can help clean the air, especially in those partsof the country that have high Many gasolines are now blended with ozone levels. materials called oxygenates. General You should ask your service station Motors recommends that use you gasolines with these blending materials, operators if their gasolines contain such as MTBE and ethanol. By doing detergents and oxygenates, and they if so, you can help clean the air, especially have been reformulated to reduce vehicle emissions. in those parts of the country that have high carbon monoxide levels. Fuels in Foreign Countries If you plan on driving in another country outside the U.S. or Canada, unleaded fuel may be hard to find. Do not use leaded gasoline. If you use even one tankful, your emission controls won't work well or at all.With continuous use, spark plugs can get fouled, the exhaust system can corrode, and your engine oil can deteriorate quickly. Your vehicle's oxygen sensor will be damaged. All that means of costly repairs that wouldn't be covered by your warranty. . . I ' M8 i