Valvoline 773732 High Performance Gear Oil, 1 gallon Meets or exceeds Ford M2C108C, Mack GO-H, and GO-J, Mil-PRF-2105E, SAE J2360, API Services GL-5, GL-4 Provides outstanding thermal stability for cleanliness and longer service life Contains additives to assist in protecting gear teeth against pitting, spalling, and scouring Contains special additives to reduce chattering in limited-slip diffentials Protects parts from rust and corrosion