T-case takes ATF, it is happy with any type of good quality ATF. ATF+3 or ATF+4 are two good choices. It takes a couple quarts.
Your 5-speed transmission is a bit fussier but three good lubes include Redline MT-90 (the best) or any good quality synthetic 10W-30 motor oil, and Royal Purple 75W-90 gear lube. Yes I know it may seem odd both 10W-30 motor oil and 75W-90 gear lube are ok but their viscosities are actually very similar since motor oil and gear lube are measured by two different viscosity scales.