2009 Mercury Mariner Owner's Manual - Page 273

Maintenance and Specifications • 3.0L DOHC V6 Duratec engine • If required, add engine oil to the engine. Refer to Adding engine oil in this chapter. • Do not overfill the engine with oil. Oil levels above the upper hole or upper mark may cause engine damage. If the engine is overfilled, some oil must be removed from the engine by an authorized dealer. 7. Put the dipstick back in and ensure it is fully seated. Adding engine oil 1. Check the engine oil. For instructions, refer to Checking the engine oil in this chapter. 2. If the engine oil level is not within the normal range, add only certified engine oil of the recommended viscosity. Remove the engine oil filler cap and use a funnel to pour the engine oil into the opening. 3. Recheck the engine oil level. Make sure the oil level is not above the MAX, FULL or upper hole/mark (depending on application) on the engine oil level dipstick. 4. Install the dipstick and ensure it is fully seated. 5. Fully install the engine oil filler cap by turning the filler cap clockwise 1/4 of a turn until it is seated. To avoid possible oil loss, DO NOT operate the vehicle with the engine oil level dipstick and/or the engine oil filler cap removed. 273 2009 Mariner (mrn) Owners Guide, 2nd Printing USA (fus)