2009 Mercury Mountaineer oil additives

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Page 6 of 388

Mercury Mountaineer 2009  Owners Manuals Do not add friction modifier compounds or special break-in oils since
these additives may prevent piston ring seating. SeeEngine oilin the
Maintenance and Specificationschapter for more information on

Page 345 of 388

Mercury Mountaineer 2009  Owners Manuals Engine Oil Recommendations
4.0L V6 Engine
Look for this certification
trademark.
Use SAE 5W-30 engine oil
Only use oils “Certified For Gasoline Engines” by the American
Petroleum Institute (API).

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Mercury Mountaineer 2009  Owners Manuals 4.6L 3V V8 Engine
Look for this certification
trademark.
Use SAE 5W-20 engine oil
Only use oils “Certified For Gasoline Engines” by the American
Petroleum Institute (API). An oil with this tradema