Many major cities with smog problems (Houston, LA...) are required to switch to a cleaner burning blend for the summer months. MTBE is the preferred choice but it pollutes groundwater so manufacturers had to switch to ethanol which, unlike MTBE, can only be blended at the terminal and it has made for a difficult transition +higher fuel prices.
Most stations here have had the ethanol blend for about a month now. My 103 doesn't like it.
Lower MPG + higher prices =
