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Message: <blockquote data-quote="TulsaMike" data-source="post: 4202663" data-attributes="member: 49625"><p>There is a 35% loss in fuel economy going from straight gasoline to e85, and e100 is about 40%. The change from straight gasoline to the e10 at the pump will be minimal, but the only reason that’s done is to produce the fuel at a cheaper cost since ethanol is subsidized, where as oil is not. Most newer vehicles have computers that can adjust for about 25% more or less fuel when running ethanol blends, so the e10 has a minimal impact, but much beyond that some will start getting check engine lights and lean codes. From a fuel system standpoint, it requires 40% more flow for a vehicle to run e85+ over straight gasoline, which is why most vehicles aren’t flex fuel.</p></blockquote><p></p>