1996 Ford F150 Owner's Manual - Page 348

Driveline Universal Joint and Slip Yoke The universal joints that come standard with your vehicle do not require lubrication. If your original equipment universal joints are replaced with universal joints equipped with grease fittings, lubrication will be necessary at the intervals shown in the Maintenance Schedule and Record booklet. Your vehicle may be equipped with a constant velocity or double cardan joint at the transfer case end of the driveshaft. The front driveshaft double cardan joint may be fitted with a flush type grease fitting that requires an adapter to permit proper lubrication. Lubricate the drive joint according to the intervals shown in the Maintenance Schedule and Record booklet. Double cardan joint Brake Fluid Your vehicle is equipped with a brake fluid level indicator in the master cylinder which lights the BRAKE warning light on the instrument panel when the brake fluid level is low. Under normal circumstances, your vehicle should not use up brake fluid rapidly. However, expect the level of the brake fluid to slowly fall as you put more mileage on your vehicle and the brake lining wears. 349