• 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 this
mark may cause engine
damage. If the engine is overfilled, some oil must be removed from
the engine by a qualified service technician.
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
MAX or FULL 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 it is 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.
2005 Mercury Mariner (mrn)
Owners Guide (post-2002-fmt)
USA_English (fus)
Maintenance and Specifications
237
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