Originally Posted by MNgopher
E15 is being pushed by the corn lobby to increase the use of biofuels. Octane is not the reason that is being pushed. It is called the blending wall - essentially there isn't much room for additional ethanol to be used as nearly everything is E10 now, unless the allowed ethanol content is increased - and just like that E15 is OK for use in cars built after 2001 to fit this agenda.
Beyond that, if GM wants to push premium fuels, there is nothing stopping them...
Not sure I agree with that. Depending on location, one can easily get a wide variety of blends right now..... E20, E30, E50, E85. Those alone make up any perceived "blending wall' that is reasoned regarding E10. You could be right that it is their reasoning, but it really doesn't stand with the facts. If the corn and ethanol folks really wanted to promote the use of ethanol, then lobby more heavily for blender pumps at retail locations that offer a wide choice or blend options.
Actually, the ceiling on ethanol in the U.S is roughly 13 billion gallons now. That has nothing to do with how much is blended where. It is a cap in production. It would be more logical that they would be promoting E15 so as to allow for higher production caps. But again, blender pumps would go much further to getting that done. With the 13 billion gallons of ethanol production currently, there is no way all the gasoline in the country could be blended to E10. Even if none of the other blends were available.
And while the ag lobby may be pushing for such things, in the end it is each state that decides what they are going to offer to the consumer. Many states do have E10 everywhere, but along side it the consumer could buy E0 if they wanted. I have it all in Iowa. E0, E10, E15, E20, E30, E50, E85 all over the place with E0 in both regular and premium available at a dozen locations in the 3 small towns that surround my rural home. And my state is corn lobby central. Agriculture is the big guerrilla on the block here and runs the state capitol. If they were really pushing for E15 like is assumed, there should be E15 on every corner in my area. Well, I only know of 1 location that has E15 at the pump, the Murphy's station at Walmart. There is more availability of E85 than E15 in my area.