Well, the T-case is gonna take a couple quarts of plain ATF is all it needs, so no gear oil needed for the T-case.
For the diff fluid/axle fluid, use the weight recommended of course, but for a particular brand, my friend uses Lucas 80/90 gear oil in his, and has not had a problem at all. He used the synthetic gear oil on 84 Chevy Silverado 4x4. I myself am probably also going to use Lucas when I change the dif fluids on mine.
As for brand of ATF, any brand is good, just to throw it out there, Valvoline makes some good stuff.
Hope this helps a bit man!
__________________
Pat Albaugh, Midwest Moderator
"Diffage" -the point at which the truck's differential makes contact with the ground.
http://www.cardomain.com/id/RageRover42Visit my RRC and others here!(updated as of September 15, 2006)
1995 RRC LWB
-LT265/75R16 Pathfinder All Terrains
-RTE 2" Lift Springs
-Pro Comp ES9000 Shocks (from DAP Enterprises)
-KMC Front Diff Guard
-4 Desert Fox 55 watt Lighting
-Radio Shack CB Radio (never know when signal fails on a cell phone)
-2 Halogen Super Sport 100 watt forward lights
-Custom slim style front bumper w/ integrated bull bar
-Lowe's Special "Homemade" Snorkel
-T-Case out of an 92' RRC
