Multihypo 80W-90 GL-4 is a multigrade gear oil formulated for the transmissions and differentials of vehicles and working machinery where GL-4 quality level lubricant is required. This oil delivers reliable drivetrain protection with additive chemistry specifically balanced for GL-4 applications, which include manual transmissions, transfer cases, and moderate-duty differentials.

The GL-4 performance level uses a moderate concentration of extreme-pressure additives that provides effective protection for spiral bevel, helical, and spur gear sets without being overly aggressive toward synchronizer materials. This makes Multihypo 80W-90 GL-4 particularly well-suited for synchronized manual transmissions, where excessive EP additive levels found in GL-5 oils can accelerate wear on bronze and brass synchronizer rings.

Multihypo 80W-90 GL-4 features excellent viscosity-temperature characteristics, maintaining consistent lubricating performance across a wide range of operating and ambient temperatures. The multigrade 80W-90 formulation ensures good cold-weather flow for easy shifting at startup while providing a robust protective film at elevated operating temperatures.

The oil is engineered to withstand medium pressures and both constant and impact loads, providing effective protection for machine assemblies operating under direct contact conditions. Additional benefits include reliable oxidation resistance that extends service life, effective corrosion protection for internal metal surfaces, and good seal compatibility. Multihypo 80W-90 GL-4 is used for manual transmissions, differentials, and reducers in passenger cars, light delivery vehicles, commercial trucks, and off-highway equipment including road, construction, agricultural, and mining machinery — wherever GL-4 oil is specified by the equipment manufacturer.