2003 Toyota Tundra Owners Manual - Page 527

'03 TUNDRA_U (L/O 0301) Dinghy towing Make sure the engine oil viscosity is suitable for the cold weather. See Section 7-2 for recommended viscosity. Leaving a heavy summer oil in your vehicle during winter months may cause harder starting. If you are not sure about which oil to use, call your Toyota dealer-he will be pleased to help. Keep the door locks from freezing. Squirt lock de-icer or glycerine into the locks to keep them from freezing. To open a frozen lock, try heating the key before inserting it. Use a washer fluid containing an antifreeze solution. This product is available at your Toyota dealer and most auto parts stores. Follow the manufacturer's directions for how much to mix with water. Do not use your parking brake when there is a possibility it could freeze. When parking, put the transmission into "P" (automatic) or into first or reverse (manual) and block the front wheels. Do not use the parking brake, or snow or water accumulated in and around the parking brake mechanism may freeze, making it hard to release. Keep ice and snow from accumulating under the fenders. Ice and snow built up under your fenders can make steering difficult. During bad winter driving, stop and check under the fenders occasionally. Depending on where you are driving, we recommend you carry some emergency equipment. Some of the things you might put in the vehicle are tire chains, window scraper, bag of sand or salt, flares, small shovel, jumper cables, etc. Your vehicle is not designed to be dinghy towed (with four wheels on the ground) behind a motorhome. NOTICE Do not tow your vehicle with four wheels on the ground. This may cause serious damage to your vehicle. NOTICE Do not use engine antifreeze or any other substitute because it may damage your vehicle's paint. 207 2003 TUNDRA from Jan. '03 Prod. (OM34421U)