[Kracka]

Oxygenated used to be a general term for ethanol or MTBE gasoline additives, but now if you see something called non-oxygenated it just means 100% gasoline and 0% ethanol. Regular gasolines contain between 0-10% ethanol depending on current market prices and state regulations. Also, remember that "ethanol" isn't actually pure ethanol and contains between 2-5% of a denaturant (depending on market prices) such as natural gasoline (not the same thing as natural gas).