2009 Mercury Grand Marquis Owner's Manual - Page 227

Maintenance and Specifications Replace wiper blades at least once per year for optimum performance. Poor wiper quality can be improved by cleaning the wiper blades and the windshield. Refer to Windows and wiper blades in the Cleaning chapter. To prolong the life of the wiper blades, it is highly recommended to scrape off the ice on the windshield before turning on the wipers. The layer of ice has many sharp edges and can damage the micro edge of the wiper rubber element. ENGINE OIL Checking the engine oil Refer to the scheduled maintenance information for the appropriate intervals for checking the engine oil. 1. Make sure the vehicle is on level ground. 2. Turn the engine off and wait up to 15 minutes for the oil to drain into the oil pan. 3. Set the parking brake and ensure the gearshift is securely latched in P (Park). 4. Open the hood. Protect yourself from engine heat. 5. Locate and carefully remove the engine oil level dipstick. 227 2009 Grand Marquis (grn) Owners Guide (own2002), 2nd Printing USA (fus)