2006 Lincoln Navigator Owner Guide 2nd Printing - Page 352

Maintenance and Specifications • 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 this 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 indicator 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 upper hole or the MAX mark on the engine oil level indicator (dipstick). 4. Install the indicator 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 the cap is fully seated. To avoid possible oil loss, DO NOT operate the vehicle with the engine oil level indicator and/or the engine oil filler cap removed. 352 2006 Navigator (nav) Owners Guide (post-2002-fmt) USA (fus)