FORD 2008 Explorer v.3 - Manual (Page 378)

Transmission fluid should be checked and, if required, fluid
should be added by an authorized dealer.
Do not use supplemental transmission fluid additives, treatments or
cleaning agents. The use of these materials may affect transmission
operation and result in damage to internal transmission components.
TRANSFER CASE FLUID (IF EQUIPPED)
Turn off the power running
boards, if equipped, before
working under the vehicle, jacking
or placing any object under the
vehicle. Never place your hand
between the extended running
board and the vehicle. A moving
running board may cause injury.
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 the Maintenance
product specifications and capacities section in this chapter.
DRIVELINE UNIVERSAL JOINT AND SLIP YOKE
Turn off the power running boards, if equipped, before working
under the vehicle, jacking or placing any object under the
vehicle. Never place your hand between the extended running board
and the vehicle. A moving running board may cause injury.
Maintenance and Specifications
378