I need to clarify some details...
In France we have 4 types of petrol:
1) RON98 - Best petrol (power, consumption), but trend to dissapear :(
2) RON95 - used by a majority of petrol cars.
3) RON95-E10 - Same as previous, but mixed with 10% of Ethanol, can be used by all cars > 2000. Less...