Octane rating behind fancy fantasy names.

Not all classic need 98, many owners just use it to avoid pre-ignition along with a lead substitute. All my classics have had the timing adjusted for 95 and are quite happy on it. All petrol will go off over time, I use a fuel stabiliser in the vehicles that don't move much.
I use this:
www.yachtshop.co.uk/646/products/quicksi...FohOBpBoCSBsQAvD_BwE

Others exist and check they are suitable for use with a CAT (Jimny), don't think the chainsaw will care. It really does work, fuel smells fresh and the petrol garden tools will start first pull with no lay up related issues.
Mike

300bhpton wrote: Re-reading your post, I'm a little lost at what you are asking.

In the UK, normal unleaded petrol is 95RON. It should say at the pump and it is typically a green pump.

Some petrol stations will offer Superunleaded. This will have an octane rating in RON of 97 or higher. I think BP Ultimate is 97 RON. While Shell V-Power and Tesco T99 are 99 octane.

Apologies if I did not phrase my sentences correctly! :pinch: My bad, I'm Hungarian. :woohoo:
But this time you actually answered my question! Thanks!
I was confused with the different names like Superunleaded, Ultimate, V-Power, etc. and what RON rating they actually have.
I'm not planning to run the car on high octane fuel, just the normal 95RON. The high (97+) octane fuel is only for those long (3+ month) periods when I'm not using this car at all and keep it garaged. So I will use Ultimate or V-Power then for the last fill-up of the season. :whistle: