Costly retrofits, state rules keeping E15 gas from making it to many stations

Pump with multiple ethanol/gasoline blends.Despite a heavy push from the Trump administration, the proliferation of fuel blends containing greater quantities of ethanol has hit a wall. In some areas, stations are even adding dedicated E0 fuel pumps due to increased demand for ethanol-free gasoline. E15 gasoline blends are widely available in states such as Iowa and Minnesota, but virtually...