Yellowtruck

I know that I have seen the posts in here before, but I don't have the time at the moment to search the threads for my answer. Besides, as great as everyone is on Y/T, I know it won't take long for someone to get the answer to me.
I want to change the trans oil and change the oil in my diff's.
I have heard that Redline MT-90 is the best. Or, is MT-90 not the right one for my truck?
Also, what about my diff's?
Currently, I use Mobile 1, fully synthetic in my engine.

My truck is a 91, 3vze, 4wd.

Matt16

MT-90 works really well in the tranny. It actually makes a very noticeable difference. Diffs- any 80w90 or heavier (you have big tires, so go heavier), synthetic or mineral oil, doesn't matter which.

4Crawler

iTrader: (3)

MT-90 in the tranny and t-case if it takes gear oil, then an GL-5 type oil in the diffs:
- http://www.4crawler.com/4x4/index.sh...ntheticGearOil