trans oil and transfer oil question for KZJ71

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Mar 23, 2025
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Maui Hawaii
What is everyone using in there 1996 LC kzj71 for there manual trans and transfer cases ? gl-4 or 5 0r something else in the trans ? what about the transfer case can't seem to find any info on this
 
Definitely get GL4, I’ve used Redline MT90 in mine for the past 40k miles. Apparently there’s a Royal Purple gear oil that people really like in these R151’s too.
 
You want brass synchro friendly fluid. I use MT90 but won’t be home for a few more days to take a picture of what I use
Ive used the mt 90 in my delica I will get some of that . Can you use that in the transfer case to per there info?
 
I have a 92 LJ78 with auto trans.
Does the transfer case have brass components in it like the manuel gear box does?
If not should I still use GL4 or is GL3 preferred?
Also, what weight or weight range is good for protection and for fuel economy (less drag)?
 

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