So there is only one gas station near my house (luckily) that still sells pure gasoline (at like 40 cents a gallon more expensive). They make a claim that it is more efficient than E10...like 25% more efficient. Does anyone know if there is truth to this, and if so I honestly wouldn't mind paying an extra 5 dollars for an increase in 25% fuel efficiency. 25% probably is an overstatement. Any thoughts?