Even though gasoline containing upward of 15% ethanol content (E15) hasn’t come on the consumer market, the government has already finalized the labels that will be affixed to pumps carrying the fuel, a sign of E15 will likely make it to your local gas station at some point. Now Bloomberg reports that nine automakers, including GM, Chrysler and Toyota have warned regulators that putting E15 in your tank may void your vehicle’s warranty. [More]