off topic ish, I always run super unleaded fuel, I will go to another petrol station if the one I am in doesn't sell a high octane fuel.... I have no idea if it makes a difference but I still use the more expensive fuel. I do know that on the bikes I have had with plastic tanks that none have had the issues others have had with bubbling etc, so I continue to use higher octane petrol from the places that use less ethanol, and I will continue to do so. I feel better and safer running my bikes and car this way, others may think I am wasting money, others have also had their tanks swell and paint jobs ruined, I haven't.