I normally fill up with good old optimax but yesterday. when out on the Mid-Wales Run 3 i had to put in a tank of esso sul, not a problem i hear you say, but today i put in a full tank of optimax again and i don't seem to think it is as sharp as with the esso sul. Could be just me trying to see adifference, has anyone else noticed this.

I apologise for another petrol thread.

Cheers James.