Just bringing this topic up again given there really isn't any explanation out there that I can find that makes the borg-warner 44-44 T-case on Rams older than 2016 different than 2016+ 44-44? Externally they look identical and they function the same.
The owner's manual for ANY year Ram with the 44-44 simply says "Mopar 44-44 transfer case fluid is recommended".
I didn't realize until today that there's two different part number Mopar fluids. Same bottle and labeling. The older fluid is red like ATF and I've read online (u know how accurate that can be) that the 2016+ stuff is dyed blue? Can anyone confirm this?
FWIW, this magical juice in either part number is like $30/qt. All you need is 1.5qts so cost isn't really a problem, I just hate dealer only and not having choices once you're out of warranty.
I'm at about 46K miles on the 2017 Ram in my sig and would like to do the diffs and T-case soon. 8HP45 trans after that.
After a lot of digging, I finally got to the bottom of these "unicorn" Mopar fluids, including the transmission fluid.
Let's start with the ZF 8 speed: Shell makes the Lifeguard 8 fluid for ZF, and it's a semi-synthetic ATF. It's very similar to Hyundai's SP-IV M / SP IV RR fluids, with a viscosity between ULV and LV ATF. There are plenty of aftermarket options to replace it. However, if you go aftermarket, I recommend a complete fluid replacement, which can get expensive.
The miracle that Mopar fluids are:
FCA (now Stellantis) came up with the new "2016+ BW44-44" transfer case fluid in 2018. I'm pretty sure that if you drain your transfer case, red ATF will come out of it. Nothing changed with the BW44-44. However, RAM figured that what is essentially a universal tractor fluid will offer better wear protection for that miserable clutch in the BW44-44 transfer case because they already messed up the programming and didn't want to fix that. The front wheels are constantly engaged and disengaged, and that can wear out the wet clutch pretty fast if used regularly, not to mention that it overheats.
So what are these fluids?
Well, the
Mopar 68089195AA BW44-45 and pre-2016 transfer case fluid is essentially Dexron III ATF with an Allison approval, but you can use and Dexron III ATF to replace it. The one in the Mopar bottle is Shell Spirax S2 ATF A389.
The
Mopar 68049954AC BW44-40 and +2016 BW44-44 transfer case fluid is Mobil Fluid LT. Borg Warner transfer cases with on-demand 4WD have used this fluid for decades, including in the Kia Borrego. You can buy a 5-gallon pail for around $150, and it will last for about 13 fluid changes. Or you can go to Advance Auto Parts and buy 2 quarts of Mobil 1 Synthetic ATF (PAO based Dex III/Mercon V fluid), add 4 oz. of Lubegard Platinum ATF Protectant to your 1.5-quart transfer case fluid change and call it a day. You will have the best transfer case fluid ever, and the Lubegard will add some wear and tear protection for that clutch, as well as smooth engagement.
I hope this helps. These fluids aren't unicorn fluids or even anything special. The problem is that the Mopar division is greedy and the high level of bureaucracy there is insane.