Diffs, transfer case and transmission Fluids

[contented]

I want to change my drive train fluids at 66k miles. I’m struggling with finding the correct fluids for rear differential, transfer case and auto trans. I’m surprised the fluids aren’t the same for the front and rear diffs. And transfer case and auto transmission each take a different fluid.

I have a 2022 Badsquatch w/ auto trans and 4A transfer case.

Can anyone point me in the correct direction.

From owners manual -

Front diff - Gear/Transmission Fluid - SAE 80W-90. WSP-M2C197-A. No trouble finding this.

Rear Diff - Gear/Transmission Fluid - SAE 75W - 85. WSS-M2C942-A

Transfer Case - Automatic Transmission Fluid WSS-M2C938-A

Transmission - Automatic Transmission Fluid. WSS-M2C949-A

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[Techun]

Everyone is just going to tell you to go heavier in the rear (and the front).

 

[Jawaburger]

https://www.bronco6g.com/forum/threads/change-driveline-fluids-early.83929/

 

[Desert_Brush]

Here's a whole thread on the topic. I'm only at 29k but have changed everything except for the transmission fluid.
https://www.bronco6g.com/forum/thre...journal-filters-fluids-oil-changes-etc.86135/

 

[jtpasto]

I know this is not the normal place to look. Go to
www.blauparts.com
and search on the specification number. This will bring up the specific oil that meets the requirement.

 

[Smocaine]

Changed it all already - as @Techun said, most would recommend you go heavier on the gear oil. I ended up using 75W110 in the back, but people like @CarbonSteel will recommend something like 75W140 on both ends.

 

[Brian_B]

https://www.bronco6g.com/forum/threads/change-driveline-fluids-early.83929/

This is the best answer. Not to hard to find compatible fluids. Worst case is you get Motorcraft via the dealer

 

[Ducati1098]

I want to change my drive train fluids at 66k miles. I’m struggling with finding the correct fluids for rear differential, transfer case and auto trans. I’m surprised the fluids aren’t the same for the front and rear diffs. And transfer case and auto transmission each take a different fluid.

I have a 2022 Badsquatch w/ auto trans and 4A transfer case.

Can anyone point me in the correct direction.

From owners manual -

Front diff - Gear/Transmission Fluid - SAE 80W-90. WSP-M2C197-A. No trouble finding this.

Rear Diff - Gear/Transmission Fluid - SAE 75W - 85. WSS-M2C942-A

Transfer Case - Automatic Transmission Fluid WSS-M2C938-A

Transmission - Automatic Transmission Fluid. WSS-M2C949-A

Ford changed the fluid for the front differential a while back. The correct fluid is now the same for front and rear.
Front and rear diff: XY-75W85-QL
Transfer case: XT-10-QLVC
Auto transmission: XT-12-QULV

 

[Kevin Scarbel]

I want to change my drive train fluids at 66k miles. I’m struggling with finding the correct fluids for rear differential, transfer case and auto trans. I’m surprised the fluids aren’t the same for the front and rear diffs. And transfer case and auto transmission each take a different fluid.

I have a 2022 Badsquatch w/ auto trans and 4A transfer case.

Can anyone point me in the correct direction.

From owners manual -

Front diff - Gear/Transmission Fluid - SAE 80W-90. WSP-M2C197-A. No trouble finding this.

Rear Diff - Gear/Transmission Fluid - SAE 75W - 85. WSS-M2C942-A

Transfer Case - Automatic Transmission Fluid WSS-M2C938-A

Transmission - Automatic Transmission Fluid. WSS-M2C949-A

No struggle necessary.
Go to the Amsoil website and enter your vehicle application.
I would suggest 75w90 over the factory spec 75w85.

 

[contented]

Thanks all.

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