I use whichever premium stuff is available usually V Power as Shell is just down the road, my bike is an American import so probably mapped to run on sewer water but the amount of fuel I use means it costs next to nothing to use the fancy stuff.
I found that you can convert RON 95 into RON 99 if you put the nozzle up your **** hole and make it come out of your mouth, of course, you can turn RON 99 into RON 95 by reversing the process.
For a year I ran normal fuel in the Aston. Then like 4 months ago I randomly stuck some Vpower in and the car crapped itself with reduced engine power warnings. Restarted the car and it was fine. Stuck with 95 Ron since then.
If your car doesn't state 97/99 then it won't make a blind bit of difference, an N/A Clio isn't going to benefit from it at all.
unless it's head has been skimmed so many times that the c/r has gone upIf your car doesn't state 97/99 then it won't make a blind bit of difference, an N/A Clio isn't going to benefit from it at all.