2009 Mercury Grand Marquis Owner's Manual - Page 238

Maintenance and Specifications 3. If this is not possible, wait a short period for the engine to cool. 4. Check the coolant level and replenish if low. WARNING: Never remove the coolant reservoir cap while the engine is running or hot. 5. Re-start the engine and take your vehicle to an authorized dealer. Driving the vehicle without repairing the engine problem increases the chance of engine damage. Take your vehicle to an authorized dealer as soon as possible. FUEL FILTER For fuel filter replacement, see your authorized dealer. Refer to scheduled maintenance information for the appropriate intervals for changing the fuel filter. Replace the fuel filter with an authorized Motorcraft part. The customer warranty may be void for any damage to the fuel system if an authorized Motorcraft fuel filter is not used. WHAT YOU SHOULD KNOW ABOUT AUTOMOTIVE FUELS Important safety precautions WARNING: Do not overfill the fuel tank. The pressure in an overfilled tank may cause leakage and lead to fuel spray and fire. WARNING: The fuel system may be under pressure. If the fuel filler cap is venting vapor or if you hear a hissing sound, wait until it stops before completely removing the fuel filler cap. Otherwise, fuel may spray out and injure you or others. WARNING: If you do not use the proper fuel filler cap, excessive vacuum in the fuel tank may damage the fuel system or cause the fuel cap to disengage in a collision, which may result in serious personal injury. WARNING: Automotive fuels can cause serious injury or death if misused or mishandled. 238 2009 Grand Marquis (grn) Owners Guide (own2002), 2nd Printing USA (fus)