For pre-1950 cars and pre-1970 motorcycles
A high quality monograde engine oil recommended for single and multi-cylinder engines under road and competition conditions.
Castrol XXL 40 is also recommended for many single and multi-cylinder pre 1970 classic motorcycles for engine and gearbox lubrication.
Must not be mixed with Castrol R30 or R40 or with any other synthetic castor or synthetic based oils
