Anyone else experiencing a black mildew growing around the filler cap inside the lid on cars since ethanol came in?
That area seems to be a filth collector, though I wonder if it has less to do with ethanol and more to do with being a semi confined area that gets a lot of gasoline splashes and environmental water. Ethanol isn’t the only thing that attracts dirt and can support micro-organisms. Prior to the ethanol rage, gas fillers also didn’t use to use the modern “safety” design and were not behind doors.