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      10-25-2012, 03:07 PM   #3
paul386
Second Lieutenant
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Drives: 2011 X3 35i Jet Black
Join Date: Oct 2009
Location: Florida


Posts: 274
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There are so many things at play here that it would be super difficult to actually determine what is causing the power change. In the United States of course, we all have to subsidize the farmers and burn low energy / high pollution / high price ethanol.

The one thing I do know for certain. Octane rating does not change the energy content in the fuel.