1997 Mercury Grand Marquis Owner Guide 1st Printing - Page 233

Use chains on the tires only in an emergency or if the law requires them where you live. If you choose to use chains on your vehicle's tires, be aware of the following: u Make sure the chains are the right size for your tires. Use only SAE Class "S" chains. Other types may damage your vehicle. u Put the chains on tightly with the ends held down securely. Verify that no chain touches any wiring, brake lines, or fuel lines. Follow the chain manufacturer's instructions. or bang against your vehicle, stop the vehicle and tighten the chains. If you continue to hear the chains rub or bang against your vehicle, remove the chains to prevent damage to your vehicle. u Drive slowly. If you can hear the chains rub u Avoid fully loading your vehicle if possible. u Remove tire chains at the first opportunity Filling the Fuel Tank after using them on snow and ice. Do not use the chains on dry roads. The fuel filler door is outside the vehicle on the driver's side near the back. To fill the fuel tank: 1. After opening the fuel filler door, remove the cap carefully and slowly by turning it counterclockwise 1/2 to 3/4 turn. RWARNING The fuel system may be under pressure. If the fuel cap is venting vapor or if you hear a hissing sound, wait until it stops before completely removing the cap. 234