Im about to change the fluids in my tranny t-case and diffs
i was plannin on puttin 75W-90 in my tranny
is this ok and can i use this in all of these?
if not wat should i use and how much

 

If it is a manual trans than the 75w-90 oil will be perfect for both. But if its the auto it needs automatic transmission fluid and 75w-90 gear oil in the t case.

 

Dosnt the TC take auto trani fluid?

 

^NO

Dexron II in the tcase.
Dexron II in the AW4.
Dexron II is no longer around, so you use Dexron III.

I dont know what to put in a manual trans, Cause I dont have one.

Edit: magator beat me.

 

Isent ATF+4 reccomended because it supposidly withstands heat better?

 

gear oil for axles, automatic transmission fluid for transfer case, GL 3 for ax15 transmission, or 10w30 motor oil for ax15 if you can't find GL3

 

no, atf4 kills the aw4. Just do a search...

 

good to know, thanks!

 

Just so I know for future, what auto trans is in mine? The aw4? I know my xfer case is the np242.

I heard dex/merc for mine?

 

AW4 was the only auto trans used in 4.0 cherokees.

Dexron III.

 

Ok I thought later ones used a different trans.

Whats the difference between dex/merc and dex III?

I still see with a quick google places like here and others that say to use to use dex/merc.

 

its the same thing.
I think last time I did mine the bottle said Dexron/Mercon III

 

I'm guessing since you first asked if you should put 75W-90 in your tranny you have a stick. I'm running 10W-30 motor oil in mine right now. I have also verified this is the proper lubricant with both Jeep and a mechanic of 30+ years that I know. Plus its cheaper than gear oil. And it will take about 3.25ish quarts

 

ive heard that before but i didnt believe it lol
royal purple? i use that in my motor and love it dont know if it would be any different for the trans and ya its a manual
wat about the tcase

 

can i also use the same 10W-30 oil in the T-case