Transfer case fluid type?
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,354
Likes: 5,946
From: Lake Hartwell, GA
I used XL-12 a few years back. Not sure what I would put in now after all of the changes from Ford and based on what Mr. Y2KW57 has posted in the past.
This is simply one example...
Quote source: https://www.ford-trucks.com/forums/1...l#post21585518
This is simply one example...
Quote source: https://www.ford-trucks.com/forums/1...l#post21585518
Originally Posted by Y2KW57
After Mobil changed the spec for their Synthetic ATF from Mercon to Mercon V, I stopped using it in the transfer case, since Ford's updated guidance from Motorcraft Service strongly recommended not to use Mercon V in the transfer case, but to instead use Transfer Case Fluid XL-12.
Some years later, Ford ceased offering Transfer Case Fluid XL-12, recommending Mercon LV in the transfer case instead. Unfortunately, Ford's recommendations are inconsistent and conflicted, since elsewhere within Motorcraft Servicen Ford stated not to use Mercon LV in the transfer case.
Ford does not adequately identify or distinguish between different transfer case designs when describing "transfer case."
Some years later, Ford ceased offering Transfer Case Fluid XL-12, recommending Mercon LV in the transfer case instead. Unfortunately, Ford's recommendations are inconsistent and conflicted, since elsewhere within Motorcraft Servicen Ford stated not to use Mercon LV in the transfer case.
Ford does not adequately identify or distinguish between different transfer case designs when describing "transfer case."
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Hotshot
Joined: Dec 2012
Posts: 11,278
Likes: 1,658
From: Las Cruces New Mexico
Sounds good thanks fellas.
I had replaced the transfer case fluid when I acquired the truck, but don't remember what I used, this confirms that I must of used Mercon V at the time, so I'm switching it today to Mercon LV, has about 40k'ish miles on the fluid so might as well change it.
I had replaced the transfer case fluid when I acquired the truck, but don't remember what I used, this confirms that I must of used Mercon V at the time, so I'm switching it today to Mercon LV, has about 40k'ish miles on the fluid so might as well change it.
Mountain Pass
Joined: Mar 2021
Posts: 149
Likes: 78
I have been using Mobil 1 ATF for many years and several hundred thousand miles.
No issues
2001 Ex PSD 4x4
PS Truck is a pavement queen with no serious off-roading and very little towing.
No issues
2001 Ex PSD 4x4
PS Truck is a pavement queen with no serious off-roading and very little towing.
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Mountain Pass
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