FORD 1998 Expedition - Manual (Page 186)

• First, at least 10 minutes of
driving on an expressway or
highway.
• Next, at least 20 minutes driving
in stop and go, city type traffic
with at least four idle periods.
Allow the vehicle to sit for at least
eight hours without starting the
engine. Then, start the engine and
complete the above driving cycle.
The engine must warm up to its
normal operating temperature.
Once started, do not turn off the
engine until the above driving
cycle is complete.
EXTERIOR BULBS
Replacing exterior bulbs
Check the operation of the
following lamps frequently:
• headlamps
• foglamps
• high-mount brakelamp
• brakelamps
• parking lamps
• turn signals
• license plate lamp
• tail lamps
• back-up lamps
Do not remove lamp bulbs unless
they can be replaced immediately
with new ones. If a bulb is
removed for an extended period of
time, contaminants may enter the
lamp housings and affect lamp
performance.
Maintenance and care
186