Ethanol increases vapor pressure (more on that here), which is why the Environmental Protection Agency has strictly mandated summer gasoline blends since 1989. One benefit to consumers ...

U.S. Sens. John Thune (R-S.D.) and Dick Durbin (D-Ill.) today led a bipartisan group of their colleagues in asking President Trump to permit the year-round sale of E15 fuel through the summer of 2025 ...