Replace Fuel Pump and Sensor this last April. Fuel Pump seized this past week in garage after last shutdown. My BMW specialist asked whether just filled with Arco gas which answer was YES. He advised TSB on Winter Gas mix adding more Ethanol which causes Fuel Pump to seize. TSB advises using on Top Tier Gasolines, which have now learned Arco is not. Specialist stated he has had multiple cars in last two weeks with this issue using Arco gas in Phoenix area. Switch gas and save yourself some potential issues.