Ethanol will dissolve the paint/coating inside a metal tank. Had the same issues years ago with my Porsche. Engine stalled, and after trying to get a restart, pulled the fuel filter. What came out of it looked like black paint. Replaced it with new from dealer who said "enjoy the world of ethanol". Most new vehicles have poly tanks to prevent this. Guess not everyone is on the same sheet of paper.
Living in the gnat capital of the world, Tifton, GA
2016 JayFlight SX 212QBW
Amateur Operator N9XGZ D*Star
2016 F-150 Lariat SCREW, 5.0L, tow package, Softopper