[supereal]

I agree, Today, there is ethanol in all gas, even when the pump says not. Gas pumps usually handle several grades, and if the user ahead used gasohol, what ever remained in the pump and hose goes into your vehicle first. The published switch to E-15 (15%) alcohol will make the problem worse. It is highly corrosive to systems later than the year 2000. Any preventive additives simply dilute the fuel.