Usually they are experienced and know which type of part that your car must be function properly on the road.
Try to find forums that are high pagerank and involving same region. It must be noted that pure ethanol does possess a lower BTU value than gasoline, which means more frequent fill-ups. https://WWW.Bbb.org/us/az/phoenix/profile/garage-doors/garage-door-grunts-1126-1000075538