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Transfer case fluid


The Jester Race

Well-Known Member
OTOTM Winner
Solid Axle Swap
TRS Banner 2012-2015
Joined
Oct 21, 2008
Messages
1,536
City
Sacramento, Kalifornia
Vehicle Year
1987, 2009
Transmission
Manual
For a BW 1354M.
I'v been told to use Mercon V, Dexron VI, Dexron II, any ATF, Gear oil. Add friction modifier, don't add friction modifier. Everyone I talk to says something different.
So what the hell do I fill this thing with?

-Jester
 
atf, might as well use the same stuff thats in your transmission. i personally have mobil 1 atf in my transfer case. i thought about using pennzoil syncromesh fluid, thats whats in my transmission, but i didnt want to take a chance on something bad happening because of the wrong oil. i dont think firction modifier would be a good idea, and i sure wouldnt put gear oil in it, thats just asking for transfer case failure.
 
ATF. If its auto, use the same as you put in the tranny. If its stick, they use ATF also so its a win, win.
 
It has "ATF Only" casted into the case near the fill plug. If that would tell you anything.
 
So....any ATF? Will Mercon V work fine? I have a case of that out in the shop.

-Jester
 
mercon V will work fine, they no longer make mercon, and the new mercon V will work in all applications for which the old mercon was specified...this did not used to be the case, they used to NOT be interchangeable...also note that the back of the merconV quart will say "do not use in transfer cases" i was told by my ford dealer that for traditional two speed part time truck transfer cases such as in our rangers i should be using merconV regardless of what the bottle says. the not for use in transfer cases supposedly refers to transfer cases in fulltime all wheel drive vehicles

very confusing, i know...its amazing how they can complicate something this simple
bottom line: merconV is fine, and is what is currently recommended by ford
 

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