1993 Cadillac Fleetwood Owner's Manual - Page 268

You should ask your service station operatorsif their gasolines contain detergents and oxygenates, and if they have been reformulated to reduce vehicle emissions. FUELS IN FOREIGN COUNTMES If you plan ondriving in another country outside the U.S. or Canada, unleaded fuel may be hard to find. Do not use leaded gasoline. If you use even one tankful, your emission controls won't work wellor atall. With continuous use, spark plugs can get fouled, the exhaust system can corrode, andyour engine oil can deteriorate quickly. Your vehicle's oxygen sensor will be damaged.All of that meanscostly repairs that wouldn't be covered by your warranty. To check on fuel availability, askan auto club, or contact amajor oil company that doesbusiness in the country where you'll be driving. You can also write us at thefollowing address for advice. Just tell us where you're going and give your Vehicle Identification Number (VIN). General Motors of Canada Ltd. International ExportSales PO. Box 828 Oshawa, Ontario L1H 7N1, Canada 254