Quote Originally Posted by aaronng View Post
No, it works fine for new hondas (up to 10%), except for slightly worse fuel consumption. I'd worry for your carby though as your seals were not specced for use with ethanol.
honda states its an 'acceptable level of corrosion' for new cars.
carburettors run more efficiently on ethanol based fuels, it somewhat counters the inefficiencies of the carby by supplying the extra oxygen present in alcohol.