Description Castrol Axle EPX 80W-90 is a multipurpose axle oil which may be used in differentials, final drives and other Applications in passenger cars and commercial vehicles where API GL-5 performance is required. It is approved by ZF for use in a range of commercial Applications including axles in off-road and agricultural equipment. Advantages High load carrying capability ensures gears operating under high loads are protected prolonging component life. High film strength ensures protection against wear and shock loads. Good thermal/oxidation stability protects against the formulation of deposits and oil thickening prolonging the life of components and lubricant.