I just mix some Sta-bil or Heet with it, run it thru a coffee filter for any sediments. Put it into a clean container, add it to some fresh gas and "keep on truckin."MY opinion: Assuming it's not got oil mixed with it, pour about 5 gallons at a time into your car/truck fuel tank, thus mixing it with fresher gas and simply use it up. That's what I do with my old generator gas I've had on hand and have never had a problem. I dispose of my old gas that way every May before hurricane season and fill my cans with fresh. Heck, if you and I were close enough, I'd be happy to fill up my one empty 5 gallon can.