To follow up on this.
As I said in one of the posts, I really didn't get any time on this last year. Driving it a bit this year, I got a chatter in the rear on a sharp left turn. Everything I read from Chrysler said to try changing the fluid. Since I used a gear oil that was supposed to be "limited slip ready", I decided that was the thing to do... So the car got the fluid changed to 80-90 Valvoline with a bottle of Ford additive. I'm glad to report the chatter is completely gone and the rear operates nice and smooth like it should.
So, I'm still very happy with the purchase. In hindsight, I should have gone with the additive in the first place. Live and learn.
