Famhipo 80W-90 GL-4 is a multipurpose multigrade gear oil recommended for the lubrication of gear transmissions in motor vehicles and working machinery operating under conditions of elevated pressures and impact loads. This GL-4 quality level oil combines multigrade versatility with the correct additive chemistry for synchronized manual transmissions and moderate-duty differentials.

The GL-4 performance level is specifically formulated with a moderate concentration of extreme-pressure additives that provides effective gear protection without being aggressive toward the bronze and brass synchronizer rings found in manual transmissions. This makes Famhipo 80W-90 GL-4 the correct choice whenever the vehicle manufacturer specifies GL-4 lubricant, as using a GL-5 oil in these applications can accelerate synchronizer wear and cause shifting difficulties.

The multigrade 80W-90 viscosity formulation provides significant advantages over monograde gear oils. At low temperatures, the oil flows more readily than a straight SAE 90 oil, enabling easier shifting during cold starts and providing faster gear lubrication at startup. At operating temperature, it maintains the same robust film strength as a SAE 90 grade, ensuring full protection under heavy loads.

Famhipo 80W-90 GL-4 is suitable for manual transmissions, differentials, reducers, transfer cases, and other drivetrain components in passenger cars, light delivery vehicles, commercial trucks, and off-highway machinery including construction, agricultural, and road equipment. Key benefits include reliable extreme-pressure protection, good oxidation resistance, corrosion protection, and effective foam suppression. This oil is an economical and versatile GL-4 solution for diverse drivetrain applications requiring multigrade year-round performance.