Valvoline 75W-90 SynPower Full Synthetic Gear Oil - 1qt (Case of 12) (VV975-12PK) Thermal Protection: Provides outstanding thermal stability for cleanliness and longer service life Corrosion Protection: Protects parts from rust and corrosion Reduces Chattering: Contains special additives to reduce chattering in limited-slip differentials Wear Protection: Contains additives to assist in protecting gear teeth For any product use or product technical questions call 1-800-TEAM-VAL