you use ATF DEXRON 3 oil in the transfer box but not in the gearbox (you do on 2wd though)

for 4x4:

0.5 litres of Dexron 3 ATF fluid in the transfer box.
1.3 litres of specific MT75 gear oil, like castrol FMT.

front and rear diffs use 1 litre each of fully synthetic hypoid oil like castrol Taf-X.

hth