Description Castrol Classic Gear Oil ST90 is formulated with high quality mineral oils, able to withstand the oxidising conditions of gearboxes and axles during service. Features Formulated with high quality mineral oils. Fortified with an anti-oxidation and anti-wear additive. Suitable for lubrication of most gear types including helical, spur, bevel and worm. Ensures gear teeth are protected against wear. Not for use of hypoid gears where API GL-4 or GL-5 oils are specified. API GL-3 spec oil. 1 Litre Monograde ST90 gear oil.
