Through the dipstick tube
The Ford Bronco transmission can use any SAE certified transmission fluid. Ford transmissions manufactured before 1979 will need an F type transmission fluid.
For a 1996 Ford Bronco : DOT 3 brake fluid ( meeting Ford specification ESA-M6C25-A )
You can use any SAE certified manual transmission fluid in your 1996 Ford manual transmission. Make sure you use manual transmission fluid and not automatic transmission fluid.
Dex\Merc
Mercon
12 TO 14 QUARTS
I'd suggest using a Dextron III/Mercon automatic transmission fluid.
Motorcraft MERCON automatic transmission fluid is used in the 5 - speed manual transmission in a 1996 Ford Explorer
the transmission fluid for a 1996 ford escort is type MA.
12 quarts
The type of automatic transmission fluid to use should be engraved on the transmission fluid dipstick
Drop the transmission fluid pan. its there.