Yea, I should be use to this after 12 years but I've driven M21/22s and my current T10 for ever and I'm spoiled. <img src="/forums/images/graemlins/smile.gif" alt="" />



No, you absolutely do NOT want to use GL5 in the t-cases. The t-case has syncros and GL5 will do exactly the same thing as it does to the transmission. (At least our) shift-on-the-fly transfer cases have synchronizers. I have a good example of what happens sitting on my garage floor. <img src="/forums/images/graemlins/frown.gif" alt="" /> When I drained the oil in March in prep for installing the NP231 conversion it came out gold. It looked like someone poured gold paint in the t-case instead of oil.

This article incorrectly states that GL4 or GL5 can be used in the V5MT1 transmission.
V5MT1: MitsubishiÆs Truck Transmission

According to all the shops I've talked to in the last 3-4 months, the dealership techs, and what I've been able to find in print - under no circumstances is GL5 rated gear oil to be run in the V5MT1-1,3 or 6 and it isn't supposed to be run in ANY of the pre-1999 shift-on-the-fly transfer cases. I didn't check anything post '99.

Edward