1998 Pontiac Grand Am Owner's Manual - Page 237

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