6-5AdditivesSome gasolines that are not reformulated for lowemissions may contain an octane- enhancing additivecalled methylcyclopentadienyl manganese tricarbonyl(MMT); ask the attendant where you buy gasolinewhether the fuel contains MMT. General Motors doesnot recommend the use of such gasolines. Fuelscontaining MMT can reduce the life of spark plugs andthe performance of the emission control system may beaffected. The malfunction indicator lamp may turn on.If this occurs, return to your authorized GM dealerfor service.To provide cleaner air, all gasolines in the United Statesare now required to contain additives that will helpprevent engine and fuel system deposits from forming,allowing your emission control system to work properly.You should not have to add anything to your fuel.Gasolines containing oxygenates, such as ethers andethanol, and reformulated gasolines may be availablein your area to contribute to clean air. General Motorsrecommends that you use these gasolines, particularlyif they comply with the specifications described earlier.NOTICE:Your vehicle was not designed for fuel thatcontains methanol. Don’t use fuel containingmethanol. It can corrode metal parts in your fuelsystem and also damage plastic and rubber parts.That damage wouldn’t be covered under yourwarranty.Fuels in Foreign CountriesIf you plan on driving in another country outside theUnited States or Canada, the proper fuel may be hardto find. Never use leaded gasoline or any other fuel notrecommended in the previous text on fuel. Costly repairscaused by use of improper fuel wouldn’t be covered byyour warranty.To check on fuel availability, ask an auto club, orcontact a major oil company that does business in thecountry where you’ll be driving.
