[GM Lifer]

Originally Posted by Rock-It Man

Don't worry, be happy. The moan is described as a normal condition in the Mustang Owners Manuals. Wish GM would do the same and put these complaints to rest.

I experienced a REAL differential catastrophe in a rental Jeep in Costa Rica. They had apparently put conventional gear oil in a LSD. When backing up, the bind and release sounded like I had just backed into a telephone pole.

If the moan only happens when cold, that means you have good LSD clutch grip when warmed up.

Thanks!