80W140 Synthetic Allfleet

It’s commonly used to protect high-load gear sets in heavy-duty applications such as drive axles and differentials. The viscosity is designed to maintain a protective film under heat and pressure. Many fleets use it as a heavy-duty gear oil for demanding road and hauling conditions.

It’s often suitable as differential gear oil 80W140 when the axle manufacturer specifies an 80W-140 grade. Always confirm the required service category (such as GL-5) and any limited-slip friction modifier requirements before filling. Using the correct synthetic axle lubricant helps reduce wear and noise under heavy loads.

Change intervals depend on duty cycle, axle temperature, payload, and the OEM maintenance schedule. Severe service (heavy hauling, high heat, frequent stop-and-go) typically requires shorter intervals than highway operation. Routine fluid sampling can help optimize drains for commercial truck gear oil while protecting gears and bearings.