Auto LSD & ATRAC LS Additive?

I’ve gone down the “which gear oil” rabbit hole. I have learned a lot. I have an 18 Tundra TRD-OR and a 15 4RUNNER 4x4. I know I have open diff’s, but does AUTO LSD or ATRAC require a limited slip additive? I want to use Mobil Delvac 1 75w90. It does not contain any friction modifiers. I did bend over and buy the liquid gold Toyota 75w LF for the transfer case. Any insight to further my education is appreciated!

 

Auto lsd simply uses the abs function, I am only 2 wheel drive but believe the atrac functions in the same way. No friction modifier needed.

 

As said it's not a mechanical LSD, it will just use brakes to slow a spinning wheel. No need for friction modifier additives.