Ive read all the previous threads regarding pinking and the ECU on the 172. Does anyone have any experience of running the 172 engine long term on 95 RON fuel? The reason I ask is cos my Leon Cupra recommends 98 Ron quoting slight power loss only if you use 95. On seatcupra.net loads of people only use 95 Ron, so I have for 18 months with no ill effects.