E locker vs fluid friction modifier

[x0infinityx]

2022 ram 1500 hemi etorque.
Off road package 4x4. 3.92 ratio.

About to change every fluid in the truck. Came across the front/rear/transfer fluids.

Question:
someone said I needed to add a "friction modifier" to one of those but wasn't sure which one (or if multiple).

Since I have an e-locker 4x4, with 3.92 gear ratio. Do I need to add this "friction modifier"? And if so to which areas (front/rear/transfer case).

Any other info im overlooking much appreciated.

 

[LaxDfns15]

I did not add the friction modifier to mine when I changed at 50k. No issues. That's mainly for the limited slip differentials.

 

[HSKR R/T]

2022 ram 1500 hemi etorque.
Off road package 4x4. 3.92 ratio.

About to change every fluid in the truck. Came across the front/rear/transfer fluids.

Question:
someone said I needed to add a "friction modifier" to one of those but wasn't sure which one (or if multiple).

Since I have an e-locker 4x4, with 3.92 gear ratio. Do I need to add this "friction modifier"? And if so to which areas (front/rear/transfer case).

Any other info im overlooking much appreciated.

You do not need the additive for the e-locker