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The museum collection remains closed to visitors, please click here for key information.

Online sales via our web shop remain operational. This includes all retail goods, Bruce Main-Smith Technical literature and online raffle sales. However, please note that we will be unable to dispatch goods ordered until the Thursday of each week. This will also include confirmation of your on-line raffle entry. The National Motorcycle Museum values your support very much at this difficult time, please rest assured that we will dispatch all goods ordered as soon as we are able. For any queries please contact

Castrol Oil GP50 – 20 Litre


Castrol Oil GP50 – 20 Litre

Product Description

Castrol Oil GP50 20L

Traditional low detergent SAE50 monograde engine oil, suitable for many pre 1950 motorcycle engine and gearbox applications as recommended by the vehicle manufacturer.


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