Ron, I've used Crappy Tire's hypoid gear oil in the last 4 trucks - it does say that its suitable for lsd's... you can buy friction modifier from the Dodge dealer for about $12 if you get any chattering from the rear using regular gear oil, but I've never had any trouble with the Crappy tire stuff.


1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/