General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.
View Poll Results: Transfer Case fluid type - 2004 4x4 V6 4.0L
Mercon
0
0%
XL-12
0
0%
Mercon LV
100.00%
Other (please comment the fluid)
0
0%
Voters: 1. You may not vote on this poll

Transfer Case Fluid Guidance

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Old 2 Weeks Ago
  #1  
Disco2026's Avatar
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Joined: Feb 2026
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Transfer Case Fluid Guidance

Hello all,

I am changing my transmission fluid in my 04 Ranger this weekend and, while I'm down there, I figured I may as well do the transfer case as well. The issue is I am not sure what fluid to use for the Transfer Case. The ford owners manual says to use Mercon, however our new AI overlords say that XL-12 or Mercon LV is the correct one (it changes everytime I ask). What fluid is the actual correct one to use in the transfer case?
Vehicle Specs: 2004 4x4 4.0L V6 SOHC.

Thank you in advance to anyone willing to share some experience!
 
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Old 2 Weeks Ago
  #2  
TimF's Avatar
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Joined: Apr 2020
Posts: 58
Likes: 9
From: Bartlett, il
I used mercon on the transfer case and mercon LV in the transmission.
 
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