Originally Posted by funkyboozer

I dont think its all about the RON rating. I know the higher thr RON means the less likely it is to self detinate, but its more about the quality of the fuel. The higher the quality, the more of the fuel burns. So tesco 99 might not be as good as BP-97 as its doesnt burn as much of the fuel that goes in.

Some race fuels might only have a 96 RON but it burns more efficiently, that's why its so expencive.

I always use V Power as that was what the car was mapped on and it seems to be the one that tops the tests too.

I did hear that Shell are the only one that make their own fuel, and most of the other garages are the same from the same supplier?? I could be wrong.