Might be where I buy gas , but my gas storage woes are showing up in two strokes.....A week in an unsealed container , Regular plastic gas jug ...You will pull your guts out starting a chainsaw or weed eater, make a fresh batch and it starts fine...I am now only mixing what I can use in a couple days.....

I had posted elsewhere about having problems with stored gas and two strokes, using a stored batch for two stroke mixing the gas goes bad faster, within one or two days.