The fight over increasing ethanol in gasoline from E10 to E15 is raging again. For more than 3 years the AMA (American Motorcycle Association) has been opposing increases in the ethanol level allowed in gasoline until studies show that an increase won’t damage motorcycle or all-terrain vehicle (ATV) engines, and won’t make motorcycles emit more nitrogen oxides than are allowed by the EPA.
The AMA supports the use of cleaner-burning fuels but is concerned that gasoline containing more than 10 percent ethanol could result in premature engine damage, degradation in performance and even failure.
Until now, motorcycle manufacturers only certify their machines to run on gasoline or blend with up to 10 percent ethanol, which is known as E10. Using the 15 percent blend in a motorcycle could void the bike’s warranty.
Instead of continuing the fight to stop the increase to 15% ethanol, the new strategy is to obtain from the government that E10 remain available at all local gas stations. Misfueling is a prime concern and consumers could be forced to fuel with E15 unless EPA requires stations to carry both legacy E10 and new E15 fuels