I get my gasoline almost anywhere, like at Irving, Citgo, or Mobil. With my very reliable but oil consuming 2013-Scion xB, 218k-miles, four original spark plugs, ........ with every eleven gallon gasoline fill-up ......... that there oil dip stick is always down 3/4 to 1-qt thanks to Irwin and Toyota, but that's another story. ....
Purposely, I store the gasoline in a small, one gallon gas container, so's it will become empty relatively sooner, and need to be refilled with fresh gas, plus sometime, once in a blue moon, I add some Mystery Oil or some Sta-bil ..... but not too recently? .....