16 CFR Part 306; Automotive Fuel Ratings, Certification and Posting; Project No. R811005
I don't like the fact that fuels meeting the E15 EPA waiver are exempted, and more labels are not going to lead to less mis-fueling. E15 is a destructive. The EPA found that ethanol can damage older conventional cars, heavy-duty engines, motorcycles, and non-road engines, explaining: "Older motor vehicles, heavy-duty gasoline engines and vehicles, motorcycles, and especially non-road products cannot fully compensate for the change in the stoichiometric air-to-fuel ratio as ethanol concentration increases. Over time, this enleanment caused by ethanol may lead to thermal degradation of the emissions control hardware and ultimately catalyst failure. Higher ethanol concentration will exacerbate the enleanment effect in these vehicles, engines, and equipment and therefore increase the potential of thermal degradation and risk of catalyst failure. In addition to enleanment, ethanol can cause materials compatibility issues, which may lead to other component failure and ultimately exhaust and/or evaporative emission increases. For older motor vehicles, heavy-duty gasoline engines and vehicles, motorcycles, and non-road products, the potential for materials compatibility issues increases with higher ethanol concentration."