The ethanol industry is responding today to a recent study designed to test vehicle compatibility with E15 and higher blends of ethanol. The study, “Mid-Level Ethanol Blends Catalyst Durability Study Screening,” was conducted by the Coordinating Research Council (CRC), a non-profit organization funded by the auto and oil industry. According to Growth Energy, the research is “inconclusive” because it failed to complete sufficient vehicle testing and it ignored a ‘pile of data’ from academic, government and third-party research that has shown that E15 does not harm engine and emission systems or affect durability or drivability.
As disclosed in the CRC report, the organization’s aim was to show higher temperatures in certain vehicles using various blends of ethanol. They did in fact accomplish this goal but the average temperature change in the 4 cylinder vehicles was only a 2.0- 2.7 degree increase from E10 to E15 but there was a degree variance of 200 degrees among some of the vehicles. The reason for this could be that some of the vehicles were not designed to run on ethanol blends so the computer systems were not programmed to adjust to the alternative fuels. This said, these computer systems could be re-programmed to run on mid-level ethanol blends with no negative effects.
In addition, CRC did not disclose that of the 25 makes and models chosen for testing, several of them are more prone to catalysis failure than others regardless of the intermediate blend in the tank – meaning that particular car’s design is a bad design and will fail even if using straight gasoline. Continue reading