I know others have done it, But Redline MT-LV 70/75 GL-4 is better!

I think 75w90 is fine in hotter areas, but if you live where the temps drop below freezing, I'd use one of the 75w oils.

 

I also found that on-line under a few different brands. I went with Redline because I know they make top quality oil, 2nd only to Amsoil(but no proof of that).

I think the redline claims it meets Toyota specs for the Trans, and not the transfer. I'll run it until Amsoil makes a LV 75w.

 

They "list" it as a replacement.
Red Line Synthetic Oil (redlineoil.com)

 

I guess so. I thought they only listed for Toyota Manual Transmission.

 

How do you know they don’t come close?

 

Just the differences in available VOAs.

 

Every oil in my taco is red line except the motor & I haven't done my auto trans yet but it's next

Never had an issue with any of it or really noticed the T case shifting any differently than before