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Transfer case should also have a GL-4. It has a synchronizer for the front drive shaft so you can "shift on the fly".


TRANSFER-Could you recommend something, please?
I'm little bit confused. Others say Redline 75w90 gear oil
and looks like this is "Exceeds API GL-5"
How often exchanged?

Thanks


I put the same thing in my transfer case that I put in the transmission, Redline MT-90.

I don't know how often you should change it.

1997 T 100 4X4 ExtraCab
5 speed, White
Worthless factory bedliner
265/75/16 Firestone Destination A/Ts
Aisin Manual Hubs
90k miles