08-03-2023, 08:25 PM
In Macronland the difference between 95 E10 and 98 E5 is in the order of 15 cents/litre in favour of the E10, which is roughly 8,5% at current prices. (98 E5 is running at or just under 2€ and E10 around 1,83€/ litre). UK price differentials are roughly similar, but nearer 10%. Not sure you'd get that much improvement in fuel economy by just a couple of flats on the SU jet adjustment, but whatever. If it makes you happy and the cars run OK on it it's all good.