Can anyone remember the original Morgan, if my memory serves me right it had a 'JAP' engine, and one could see the exposed valve rockets working away on tick over?
Ah, the smell of Castrol 'R'
Then along came the Reliant Robin to give all three wheelers a bad name.
Toureman, when I had a motor bike I used to put Castrol `R` in the petrol like you said, then roar around Bournemouth town centre with my mates. Ahh, such sweet days, gone forever.