Front and rear differential. Transfer case oil type?

Wanting to change my own fluids on my truck so I know it gets done correctly. I have a 07 tacoma off-road 4x4 what weight oil is recommended and do I need (LS) additive for my truck? Thanks in advance for the help

 

I personally run 85w 140 Lucas non synthetic I found this article helpful https://eastcoastgearsupply.com/ft-2536-ecgs-gear-oil-recommendation.html

 

This is a great reference for maintenance.
https://www.tacomaworld.com/threads/2nd-gen-diy-maintenance-quick-reference-guide.438945/

The off-road uses an open differential so LS additive is not needed.
If the fluid you buy has it in it, it’s fine. It won’t hurt anything.

 

Appreciate the help