Product detailed description 
Original Mopar differential  additive. Special additive for  transmissions and differentials of  off-road cars, SUVs and American  cars (Dodge, Jeep, Chrysler) providing  Limited slip, ELTD, Lock Out or  Vari Lock required by the manufacturers  of these cars.
Standard:
MS-10111
Packaging:
120 ml (4 oz.)
OEM:
04318060AB, 04318060AC, 04318060AD, 05103522EA
Manufacturer's description
Reduces wear, noise and chatter in  limited slip (Sure-Grip,  Trak-Lok, Power-Lok) differentials. Should be  added whenever the gear  oil is changed or improper limited slip  operation is detected.