Millers Oils Classic Millerol M50 is a non detergent monograde mineral oil for petrol and diesel engines and gearboxes for veteran and vintage applications. Millerol non detergent monograde oils are suited to veteran and vintage cars manufactured before 1940. Such vehicles did not have any sophisticated form of filtration. The Millerol range is superior to the original lubricants used and as then so not contain dispersants/detergents to solubilize deposits. Contains an additive package that reduces wear and prevents oxidation and rusting. Also available in 5 litres