I always use 95 octane in our 1990 1.6 CVH engined Morgan. Last time in England, I wondered if I heard a knock from time to time. That raised the question for me, is it better to use 98 octane in our Morgan!?
Ruut Bianchi Morgan PlusFour 2023 Bentley Midnight Emerald Morgan 4/4 4-seater 1990 Royal Ivory
