Millers Oils Classic diff oil is a gear oil for highly loaded hypoid gears to API GL5 for classic vehicles. We sell loads of it for MGB back axles for example.
When it comes to performance not all oils are the same. Millers Oils Classic lubricants offer ultimate protection in period viscosities to protect and enhance the performance of vintage, veteran and classic vehicles. So whatever oil you need you can trust Millers Oils to take complete care of your vehicle.