Had to add FM to my diffs.
Used Mobil 1 75w-140 LS back when I changed the gear oil, it had enough FM for the stock tires, guess the new tires have enough extra foot print that they don't slip as much as the stockers, she started complaining after getting the new Generals put on. Put approx. 2 oz. of the MoparFM in the rear and approx. 1 oz. in the front. She's happy again, no complainting, haven't had a chance to see how bad it hurt the "lock-up" ability off road, I probably won't be as happy as she is, they *were* locking in pretty tight and quick with the stocker tires.
Just noticed I've got 50 posts now, guess I'll have to think about posting a picture or 2.