2003 Ford Ranger Owner Guide 3rd Printing - Page 199
2003 Ford Ranger Manual
Page 199 highlights
Maintenance and Specifications Engine Oil Recommendations 2.3L & 3.0L Engines Look for this certification trademark. SAE 5W-20 engine oil is recommended. 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. 4.0L Engine Look for this certification trademark. SAE 5W-30 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-M2C205-A. 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. Change your engine oil according to the appropriate schedule listed in the scheduled maintenance guide. 199