Around here, unused gasoline has to be disposed of at a hazardous waste facility. Our local sanitary landfill has a "hazardous waste disposal" day twice a month in the summer/fall, closed in winter. Here, it's free. Other places tend to require a fee.
RV-9A, 2011, bought flying
IO-320D1A (factory new), C/S
AFS 5400/3500, G5, IFD440 navigator,
bunch of other stuff