Also, is there a consensus as to whether 93 octane with up to 10% ethanol is better or worse for our cars? As far as tuning goes that is. I don't mean its adverse effects on carburetors and all that. Ethanol has a higher octane rating that gasoline, correct? So it would make sense that it wouldn't be any lower than 93 octane. At least that's my line if thinking and why I'm asking, because I don't know for sure.