In Colorado, Gevo has finished testing a gasoline-isobutanol blend that performs better than ethanol blends in small engines. The research, which comprised a side-by-side analysis of performance, durability, and emissions, indicated that isobutanol blends at 12.5% could ease the pressure on moving to higher ethanol blends to meet biofuel mandates with no impact on small engines.

Regarding the research, Patrick Gruber, CEO of Gevo said, “the OPEI test results provide further evidence that isobutanol is a superior gasoline blend stock for engines of all kinds. In addition to the issue of engine compatibility, our technology addresses other limitations of ethanol – infrastructure compatibility, evaporative emissions and the blend wall – to the benefits of all consumers.”