Oh dear the doom merchants can’t give up. I’ve been using E10 in all of my petrol engines since 2009 when it was introduced into Germany. As all the cars, motorcycles, lawn mowers, chainsaws, strimmers and outboard motors are E10 compliant there have been no problems, none at all. Even my 1931 Ford loves it! I’ve spilled a fair bit of E10 on paintwork an£ there has never been a problem. Get over it, Britain is more than 10 years behind in the case of introducing E10 and there’s a huge amount of data out there about which engines are affected if you are really concerned ask the manufacturer if not ignore the uninformed idiots and move forward. From the outside this sort of thread looks sad, very sad.