C coop110 New Member Messages 19 Reaction score 17 Points 3 Oct 23, 2025 #1 I'm looking to change the transfer case fluid on my 3500, can we use a GL-4 hydraulic oil?
AH64ID Moderator Staff member Messages 5,187 Reaction score 5,392 Points 113 Oct 23, 2025 #2 I’d be concerned about potential pumping issues for the internal lube pump, so you’re better off to run a ATF like ATF +4 or Dexron III.
I’d be concerned about potential pumping issues for the internal lube pump, so you’re better off to run a ATF like ATF +4 or Dexron III.