I'm a big Amsoil fan. Its in my engine, diffs and tcase.
You can look up the specs for your particular vehicle at Amsoil.com to see what the proper fluids are. In some cases, they'll actually tell you when there's not an Amsoil product that meets/exceeds OEM requirements. (One example is the CVT used in the Ford Freestyle.... found that out doing some work on my neighbors vehicles )