Anti-Spin vs limited-slip rear diff change

[ACovelle]

I have a 2019 1500, 5.7L Hemi, with a 3.21 gear ratio (according to the build sheet i found online by plugging in my VIN.)

I am looking to do a front and rear diff fluid change at 60k miles, but my build sheet says i have an "Anti-Spin" differential.

The owners manual says to add the additive if you have a "Limited-Slip"....are these the same thing?

I just need to know If i should get a specific type of 75W90 for the rear flush, or if i need additive. The difference in language gives me pause.

thanks!

 

[kapinallinen2]

Anti spin and limited slip are the same and need friction modifier.