1998 Ford Ranger Owner Guide 1st Printing - Page 117
1998 Ford Ranger Manual
Page 117 highlights
Maintenance and care Adding engine oil 1. Check the engine oil. For instructions, refer to Checking the engine oil in this chapter. 2. If the fluid level is not within the normal range, add only certified engine oil of the preferred viscosity. Add engine oil through the oil filler cap. Remove the filler cap and use a funnel to pour oil in the opening. 3. Recheck the oil level. Make sure the oil level is not above the MAX mark or the letter F in FULL on the dipstick. Engine oil and filter recommendations Look for this certification mark. Ford oil specification is WSS-M2C153-G. Use SAE 5W-30 motor oil certified for gasoline engines by the American Petroleum Institute. 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 and filter according to the appropriate schedule listed in the "Service Guide". 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, startup 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. 117