1997 Pontiac Grand Prix Owner's Manual - Page 274

If your vehicle is certified to meet California Emission Standards (indicated on the underhood tune-up label), it is designed to operate on fuels that meet California specifications. If such fuelsare not available in states adopting California emissions standards, your vehicle will operate satisfactorily on fuels meeting federal specifications, but emission control system performance may be affected. The malfunction indicator lamp on your instrument panel may turn on and/or your vehicle may fail a smog-check test. If this occurs, return to your authorized Pontiac dealer for diagnosis to determine the cause of failure. In the event it is determined that the cause of the condition is the type of fuels used, repairs may not be covered by your warranty. Some gasolines that are not reformulated for low emissions contain an octane-enhancing additive called methylcyclopentadlenyl manganese tricarbonyl (MMT); ask your service station operator whether or not his fuel contains MMT. General Motors does not recommend the use of such gasolines. If fuels containing MMT are used, spark pluglife may be reduced and your ernissicrn control system performance may be affected. The malfunction indicator lamp on your instrument panel may turn on. If this occurs, return to your authorized Pontiac dealer €or service. are now required to contain additives that will help prevent deposits from forming in your engine and fuel system, allowing your emission control system to function properly. Therefore, you should not have toadd anything to the fuel. In addition, gasolines containing oxygenates, such as ethers and ethanol, and reforrnulate'd gasolines may be available in your area to help clean the air. General Motors recommends that you use these gasolines if they comply with the specifications described earlier. ~~ To provide cleaner ais, all gasolines in the United States NOTICE: Your vehicle was not designed for fuel that contains methanol. Don't use it. can corrode It metal parts inyour fuel system and also damage plastic andrubber parts. That damage wouldn't be covered under your warranty. _____~~ 6-4