SAE 5W-20 engine oil continues to be the only recommended oil for most Ford vehicles and the Mazda Tribute. The Ford Engineering Material Specification for SAE 5W-20 service fill oils remains WSS- M2C153-H, which specifies ILSAC GF-3 requirements and the display of the API Certification Mark. In addition, it specifies the double-length ASTM Sequence IIIF test. SAE 5W-20 oil provides our customers with improved fuel economy and oil life performance. We continue to promote it strongly for our customers and request the support of oil marketers to continue supplying SAE 5W-20 oils to Ford Motor Company customers.

SAE 5W-30 is recommended for the SVT Focus 2.0L Zetec HP and 4.0L V6 applications, which are the only gasoline-fueled vehicles not recommending SAE 5W-20. The Ford Engineering Material Specification for SAE 5W-30 service fill oils is WSS-M2C205-A, which specifies ILSAC GF-3 requirements and the display of the API Certification Mark. Fuel recommendations are similar to previous model Owner Guides with no significant changes. An example of the Ford Motor Company 2004 MY Owner Guide for both fuel and engine oil recommendations are attached for your reference. A copy of the oil specifications for service fill is also attached (WSS-M2C153-H and WSS-M2C205-A).