According to the 2002 Ford F-250 owners manual :
( 1.9 litres / 2.0 U.S. quarts of Motorcraft MERCON automatic Transmission Fluid
is used in the transfer case )
A 2002 Ram transfer case uses ATF+4 transmission fluid.
Motorcraft MERCON automatic transmission fluid is used in the transfer case
Motorcraft MERCON automatic transmission fluid in the transfer case according to the 2002 Ford Ranger Owner Guide
It uses ATF
According to the 2002 Ford F-150 owners manual : ( 1.9 litres / 2.0 U.S. quarts of Motorcraft MERCON automatic transmission fluid is used in the transfer case )
According to the 2002 Ford Expedition Owner Guide : 1.9 liters ( 2.0 quarts ) of Motorcraft MERCON automatic transmission fluid is used in the transfer case
It uses ATF+4
The Owner Guide shows Motorcraft Mercon automatic transmission fluid
Change and flush the transfer case fluid immediately.
You will see 2 plugs on transfer case, the lower is to drain, upper is to fill or check level
ATF+4, about 2 quarts
The 1974 model 203 transfer case has a fluid capacity of 5.5 quarts. You can check the fluid level from the same hole that you fill the transfer case.