speed_demon24

iTrader: (6)

I just got 3.73's put in friday, and I gave them everything, including a bottle of the gm limited slip additive. The rear end is 100% quiet when I drive in a straight line, but during tight turning it makes sort of a moaning noise. Could they have not put in the rear end addictive, or what else would cause this?

pekkaz

That would be very typical for not putting the additive into the oil.. if you have clutch type posi. New gears release material into the oil during brake in which may also affect the clutches some. Just finish the break-in of the gears and then replace the fluids yourself.