- Robin has sent me the attached photos of an extra large CS1 - or perhaps ES2! - oil tank for a '27 to '29 Model. It's overall width is no less than 11 inches
(just under 28cm) and I am told it smells strongly of Castrol R. It would seem to have racing origins even though the filler cap is on the 'normal' - right-hand - side. Anyone have any ideas or seen one like it before?