OK, thanks. I've been wanting to experiment with E0 myself. What burns my britches is that the only way to get E0 where I live is to buy premium gas; you can't get regular unleaded that's also E0.
This not only makes the E0 more expensive, but it would cast doubt on my experiment. If my MPGs go up on E0, is it because of the E0, or because of the premium gas (or both)?