Fluid Changes

This might be a dumb question but I have always used the same brands of fluids throughout on my vehicles. I have a manual transmission Tacoma that when the time comes I’m going to change the fluids in the differentials, transfer case, and transmission. I want to use Amsoil severe gear as I have heard good things about it. However, they do not have an equivalent for the transfer case. Can I use OEM fluid in the transfer case and Amsoil in all other locations? Thank you for any insight.

 

Having the same brands is just a personal preference. truck doesn't know or care

 

Amsoil doesn’t make a 70-90w for the transfer case?

 

Pretty sure you can use redline in the T case. I think the OE stuff is super overpriced for some reason