1997 Mercury Grand Marquis Owner Guide 1st Printing - Page 212

7. Put the dipstick back in and make sure it is fully seated. It may be necessary to add some oil between oil changes. Make sure you use a CERTIFIED engine oil of the preferred viscosity. Your vehicle's warranty coverage may not apply if engine damage is caused by the use of improper engine oil. Add engine oil through the oil filler cap highlighted in yellow. To add oil, remove the filler cap and use a funnel to pour oil into the opening. Be careful not to overfill the engine. Recheck the oil level after you finish adding oil. Changing the Engine Oil and the Oil Filter Change the engine oil and oil filter per the following, whichever occurs first. Refer to the Maintenance Schedule booklet for additional information. NOTE: Always dispose of used automotive fluids in a responsible manner. Follow your community's standards for disposing of these types of fluids. Call your local recycling center to find out about recycling automotive fluids. 213