The following was sourced from the National Marine Manufacturer's Association (NMMA) Website.
Altoona, Pennsylvania based convenience store chain Sheetz announced on January 21 that it would offer E15 fuel – gas containing up to 15% ethanol – at 60 of their North Carolina locations beginning in early 2015. NMMA and the recreational boating community agree that E15 causes problems for marine engines as well as other small engines.
One of the greatest concerns facing the recreational boating industry today relates to the federal government’s Renewable Fuel Standard (RFS), specifically the introduction of E15 into the marketplace. There are no marine engines warrantied to run on E15 and according to AAA, most automobile manufacturers say any damage due to the use of this higher ethanol blend fuel will void the warranty.
The RFS is a broken law which sets unrealistic fuel mandates and requires a long term fix from Congress. The recreational boating community as a whole knows first-hand the problems associated with the RFS. This damage hurts manufacturers during a time of important economic recovery and places the burden of unnecessary risks upon the shoulders of American consumers.