Silkolene Donington 40 is a Crankcase oil of the straight or non-detergent type.Crankcase oil of the straight or non-detergent typeSuitable for use in re-circulating and total loss lubrication systemsVeteran and older vintage cars and motorcyclesSilkolene Donington 40 is suitable for use in re-circulating and total loss lubrication systems on certain veteran and older vintage cars and motorcycles where the engines operate under low to moderate speeds, loads and temperatures.This Oil must be changed every 1000 miles / 1500 km, as was usual with early engines.Recommended Applications - Veteran and older vintage cars and motorcycles where the engines operate under low to moderate speeds, loads and temperatures.Specification - API SAAvailable Viscosities - SAE 40Available Sizes - 4 Litre