Classic EP90 is a mineral based gear oil containing antioxident anti-wear and extreme pressure additives to protect against problems due to oil oxidation gear corrosion and wear. This gear oil is recommended for: conventional spiral bevel final drives and mild hypoid axles as well as spur and helical gears and other applications were API: GL-4 is recommended.?ApplicationsFor hypoid and non-hypoid applicationsAlso use where "Castrol Hypoy" has been specified{specs}.