2005 Mercury Mountaineer Owner Guide 3rd Printing - Page 262

Maintenance and Specifications 4.0L 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). An oil with this trademark symbol conforms to the current engine and emission system protection standards and fuel economy requirements of the International Lubricant Standardization and Approval Committee (ILSAC), comprised of U.S. and Japanese automobile manufacturers. To protect your engine's warranty use Motorcraft SAE 5W-30 or an equivalent 5W-30 oil meeting Ford specification WSS-M2C929-A. Do not use supplemental engine oil additives, cleaners or other engine treatments. They are unnecessary and could lead to engine damage that is not covered by Ford warranty. Change your engine oil according to the appropriate schedule listed in the scheduled maintenance information. Ford production and aftermarket (Motorcraft) oil filters are designed for added engine protection and long life. If a replacement oil filter is used that does not meet Ford material and design specifications, start-up engine noises or knock may be experienced. It is recommended you use the appropriate Motorcraft oil filter (or another brand meeting Ford specifications) for your engine application. 262 2005 Mountaineer (mnt) Owners Guide (post-2002-fmt) USA (fus)