Quote:
Originally Posted by DGthe3
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Gasoline with ethanol (other than E85) has the same octane rating as normal dino-juice. When they add ethanol to the gasoline blend, they change the ratio of hydrocarbons in the mix. Less stuff with 8 or more carbon atoms in its chain, more stuff with 7 or less. In the end, it all averages out
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http://www.biofuels.nsw.gov.au/biofu...0_fuel_economy by just googling real quick there you go a government website which stated just like I did that cheaper gasoline is used to get the octane rating.
Run older cars which hate the ethanol and you can sure tell when you get pure gas vs ethanol induced lobbying.