Those little stickers announcing that the fuel you're about to put into your tank contains up to 10 percent ethanol are getting pretty ubiquitous, aren't they? But pumps that can dispense E20 or E30 are less common, and they may never take off because the EPA is worried that the higher ethanol content in the fuel can damage cars that are not equipped to deal with the biofuel. Since these "blender pumps" operate the same way as standard gasoline pumps and customers might inadvertently put them in non-E85 ready vehicles, the EPA is stepping in to stop them from operating in some areas, like South Dakota. The EPA is researching whether 20 or 30 percent ethanol-blended gasoline meets Clear Air Act standards and how it affects engines.

E30 is very popular with some customers. Rick Pigors, manager at the Farmers Union Co-op, where standard gasoline, E85 and E30 is currently available, told the Aberdeen News that if the EPA shuts the E30 pump down, he expects people will put standard gasoline and E85 into their tanks to arrive at a mix of about E30. It's not precise, but it's what his customers want.

[Source: Aberdeen News via Domestic Fuel]

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