ATF. Usually Dexron III. For heavy duty (off roading) I use 80/90 gear oil. Royal Purple is the best in my opinion
Atf
The NP-249 uses Dextron II or ATF Plus/Type 7176 (or their superceding fluid type) automatic trans fluid.
Dextron III
Yes, that is the proper fluid.Yes, that is the proper fluid.
That is 80 weight.
ATF+4
Valvoline 80W-90 gear oil.
Motorcraft MERCON automatic transmission fluid is used in the transfer case for the 4x4 and all wheel drive systems
Dextron 3 is what GM dealers put in the np 241 transfer case it has lanolin in it and keeps the clutch pack from going out.
The automatic transmission takes Motorcraft MERCON - " V " - automatic transmission fluid The transfer case takes Motorcraft MERCON - automatic transmission fluid
NP241...?
Motorcraft MERCON automatic transmission fluid in the transfer case ( according to the Owner Guide )