yes and no, as of right now the ultra low sulfur has lowered our mpg and increased the engine temp. if thry can figure a way to make alt fuels as efficient yes but if it takes more then goin backwards again. like e-85
i regret not buying a H1 hummer a few years back when i could have.... but now im glad i have my honda... my F150 4x4 used to cost me 50-75 4 years ago to fill both tanks.... i couldnt even afford to fill one now