2002 Ford F250 Owner Guide 5th Printing - Page 226

Maintenance and Specifications Checking and adding transfer case fluid (if equipped) 1. Clean the filler plug. 2. Remove the filler plug and inspect the fluid level. 3. Add only enough fluid through the filler opening so that the fluid level is at the bottom of the opening. Use only fluid that meets Ford specifications. Refer to Lubricant Specifications in this chapter. DRIVELINE UNIVERSAL JOINT AND SLIP YOKE Your vehicle may be equipped with universal joints that require lubrication. Refer to the scheduled maintenance guide for maintenance intervals. If the original universal joints are replaced with universal joints equipped with grease fittings, lubrication will also be necessary. AIR FILTER MAINTENANCE Refer to the scheduled maintenance guide for the appropriate intervals for changing the air filter element. When changing the air filter element, use only the Motorcraft air filter element listed. Refer to Motorcraft Part Numbers. 226