FORD 1998 F-150 - Manual (Page 175)

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 the
Capacities and specifications
chapter.
DRIVELINE UNIVERSAL JOINT
AND SLIP YOKE
The universal joints standard with
your vehicle do not require
lubrication. If the original universal
joints are replaced with universal
joints equipped with grease
fittings, lubrication will be
necessary.
BATTERY
Your vehicle may be equipped with
a Motorcraft maintenance-free
battery. If the original equipment
battery needs replacing, it may be
replaced with a low-maintenance
battery. The low-maintenance
battery normally does not require
additional water during its life of
service. However, for severe usage
or in high temperature climates,
check your battery electrolyte
level, at least every 24 months or
40,000 km (24,000 miles). Keep
Maintenance and care
175