http://247wallst.com/2009/05/12/a-movem ... hanol-use/
The US Environmental Protection Agency has proposed increasing the maximum amount of ethanol blended in gasoline from 10% (E10) to 15% (E15). An ethanol industry group called Growth Energy and 54 ethanol makers back this increase.
A bigger potential problem for ethanol makers is that most car warranties are voided if more than 10% ethanol is used. Sure it would possible to offer both E10 and E15 at a single filling station, but the opportunity for pumping the wrong fuel goes way up. If the EPA approves E15, will filling stations need to create a third size of fuel filling nozzle to prevent the wrong ethanol blend from being used?
