1997 Buick Riviera Owner's Manual - Page 242

To provide cleaner air, all gasolines the United States in are now required to contain additives that will help prevent depositsfrom forming in your engine and fuel system, allowing your emission control system to function properly. Therefore, you should not have to add anything to fuel. In addition, gasolines the containing oxygenates, such as ethers and ethanol, and reformulated gasolines may be available your area to in help clean theair. General Motors recommends that you use these gasolinesif they comply withthe specifications described earlier. Fuels in Foreign Countries If you plan on driving another country outside the in United States or Canada, the proper fuel may be hard to find. Never use leaded gasoline or any othernot fuel recommended in the previous text fuel. Costly repairs on caused by use of improper wouldn't be covered fuel by your warranty. To check on fuel availability, ask an auto club, or contact a major company that does business the oil in country where you'll be driving. You can also write us at following addressfor the advice. Just tell us where you're going and give your Vehicle Identification Number(VIN). General Motors International Product Center 1908 Colonel Sam Drive Oshawa, OntarioL1H 8P7 NOTICE: Your vehicle was not designed for fuel that contains methanol. Don't use it. can corrode It metal partsi your fuel system and also damage n plastic and rubber parts. That damage wouldn't be covered under your warranty. 6-5