Valvoline High Performance SAE 80W-90 Gear Oil is the thermally stabile extreme pressure lubricant that offers outstanding protection for gearboxes and differentials in passenger cars, light trucks, and sport utility vehicles. Combined with high quality base oils, our formulas superior additives help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions. Recommended for use in conventional hypoid differentials and non-synchronized manual transmissions where an API-GL5 or GL-4 fluid is specified. Protect your gears with Valvoline, the #1 gear oil brand.