Black plate (8,1)Cadillac STS Owner Manual - 2011Gasolines containing oxygenates, such as ethers andethanol, and reformulated gasolines might be availablein your area. We recommend that you use thesegasolines, if they comply with the specificationsdescribed earlier. However, E85 (85% ethanol) andother fuels containing more than 10% ethanol must notbe used in vehicles that were not designed for thosefuels.Notice: This vehicle was not designed for fuel thatcontains methanol. Do not use fuel containingmethanol. It can corrode metal parts in the fuelsystem and also damage plastic and rubber parts.That damage would not be covered under thevehicle warranty.Some gasolines that are not reformulated for lowemissions can contain an octane-enhancing additivecalled methylcyclopentadienyl manganese tricarbonyl(MMT); ask the attendant where you buy gasolinewhether the fuel contains MMT. We recommend againstthe use of such gasolines. Fuels containing MMT canreduce the life of spark plugs and the performance ofthe emission control system could be affected. Themalfunction indicator lamp might turn on. If this occurs,return to your dealer for service.Fuels in Foreign CountriesIf you plan on driving in another country outside theUnited States or Canada, the proper fuel might be hardto find. Never use leaded gasoline or any other fuelnot recommended in the previous text on fuel. Costlyrepairs caused by use of improper fuel would not becovered by the vehicle warranty.To check the fuel availability, ask an auto club,or contact a major oil company that does business inthe country where you will be driving.6-8
