Made some passes on a rebuilt 742 case and used the Valvoline 80/90 gear oil that states that it has the limited slip additive in it. I made 6 passes and noticed last weekend that I'm getting clutch chatter when backing up and pulling forward in slight turns. The diff was set up by a local known Mopar guy so I definitely trust his work. So my plan is to drain the gear oil and install new oil, any recommendations on the additive. First time I've used this type of gear oil with the additive in it as it states on the bottle, so far not impressed. center section is all new 3.55 gears to.:burnout: