the manual trans should be dexIII auto fluid, sounds wrong but isnt, the auto trans i would think the same but not 100% on that
The Ford Bronco transmission can use any SAE certified transmission fluid. Ford transmissions manufactured before 1979 will need an F type transmission fluid.
Through the dipstick tube
Dex\Merc
Mercon
12 TO 14 QUARTS
I'd suggest using a Dextron III/Mercon automatic transmission fluid.
How much transmission fluid does a 2001 ford Taurus need
12 quarts
Remove the transmission oil pan
8.0 quarts are needed for a 1990 ford taurus.
If its an automatic just add the fluid right through the dipstick tube, If its a manual theres a plug to remove on the tranny (drivers side I believe) and just add it through there.
It doesn't have a dipstick for the manual transmission , the transmission fluid level is checked at the FILL PLUG on the side of the transmission