GL4 vs. GL5 - Toyota Transfer Case

Messages
43,650
Location
'Stralia
Transfer cases it don't matter. They oft spec ATF in them, when they are the same as the manual tranny. If your gearbox is GL4, then use that.
 
Messages
8,756
Location
RI
I would use a GL5. In rarely maintained transfer cases, any added protection will help. I've seen too many gear, bearing, bushing, chain... failures in transfer cases. Use the best fluid always.
 
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