i am the former owner of one
Engine Oil: 5W-40 is best for both fuel eco and power but 10W-40 is okay too.
both front and rear differential take Hyphoid GL5 gear oil, don't use Gl4, viscosity is 75W-85 but 85W-95 is acceptable in worst case if you can't find it, toyota Differential fluid is really good, make sure you don't have a LSD rear differential as it requires a special friction modified LSD oil, LSD was a optional extra but rare.
Centre differential takes Gl4 75W-85 oil and is perfectly happy with toyota gl4 manual transmission oil, you can use toyota one,
ATF it uses Mitsubishi SPII-SPIII which is not available, don't use generic ZIC old school ATF you ruin it, try to find a replacement that meets this mitusbihsi spec, check shell or mobil 1 ATF to see if it meet this spec, in my case i used Liqui moly top tech 1200 ATF which mentioned this mitusubishi spec
for Power Steering it uses old school ATF like Dexron II, generic power steering fluid may work but may also cause damage.
specs of oils that i mentioned are most important, brand does not matter, try to find oil that meets the specs rather than going for brand name such as ZIC, Total etc