Low Fluid Level; Correct Fluid Level - Ford 1998 Expedition Owner's Manual

Maintenance and care
6. Install the dipstick making sure it is fully seated in the filler tube.
7. Remove the dipstick and inspect the fluid level. The fluid should be in
the designated area for normal operating temperature (H) or ambient
temperature (C).

Low fluid level

Do not drive the vehicle if the fluid
level is at the bottom of the dipstick
and the ambient temperature is
ADD COLD HOT DO NOT ADD
above 10°C (50°F).

Correct fluid level

The transmission fluid should be checked at normal operating
temperature 66°C-77°C (150°F-170°F) on a level surface. The normal
operating temperature can be reached after approximately 30 km (20
miles) of driving.
You can check the fluid without driving if the ambient temperature is
above 10°C (50°F). However, if fluid is added at this time, an overfill
condition could result when the vehicle reaches normal operating
temperature.
The transmission fluid should be in
this range if at normal operating
temperature (66°C-77°C
ADD COLD HOT DO NOT ADD
[150°F-170°F]).
The transmission fluid should be in
this range if at ambient temperature
(10°C-35°C [50°F-95°F]).
ADD COLD HOT DO NOT ADD
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