[tomcarman]

I know nothing about the science of gasoline. I do know from personal experience we use ethanol free gas in the '32 (33 engine) and all our auxillary lawn care equipment, etc. Because they tend to sit for months on end without use we don't worry about degradation and varnish etc. They always fire right up and run just fine. Perhaps if one required higher octane for a higher compression engine or performance this gas may not be the best. Don't know but would be very interested to hear more on the science on this thread. The ethanol free gas is more expensive but given it is used far far less than daily drivers the cost difference is insignificant.