2003 Mercury Mountaineer Owner Guide 1st Printing (Spanish) - Page 502

Maintenance and Specifications 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 hole 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 or until three clicks can be heard. To avoid possible oil loss, DO NOT operate the vehicle with the engine oil level indicator and/or the engine oil filler cap removed. Engine Oil Recommendations 4.6L Engine Look for this certification trademark. SAE 5W-20 engine oil is recommended. Only use oils "Certified For Gasoline Engines" by the American Petroleum Institute (API). Use Motorcraft or an equivalent oil meeting Ford Specification WSS-M2C153-H. SAE 5W-20 oil provides optimum fuel economy and durability performance meeting all requirements for your vehicle's engine. Change your engine oil and filter according to the appropriate schedule listed in the scheduled maintenance guide. Do not use supplemental engine oil additives, oil treatments or engine treatments. They are unnecessary and could, under certain conditions, lead to engine damage which is not covered by your warranty. 215