As far as I've read and understood, between 0-5% ethanol in petrol does not need to be disclosed at the pump and for all anyone knows, you probably are running on that stuff and as linked in the AA article this is not likely to have any adverse effects or compatibility issues.. but at 10% there is an issue as highlighted in my manual and the fact that any car pre 2009 might have a problem got me to thinking.. is my bike going to be screwed when this kicks in?