I use a mineral/classic 20w 50 oil which includes ZDDP in a1976 Pinto engine car I own, I expect my old RR use similar mineral oil when it was serviced by the Main Dealer for the ten years I owned it, that was the good old days of Duckham’s Q and...

Info? What info I must of missed it, perhaps I’m like any other motor enthusiast we already know how good engine oil benefits our engines. :D