Barter items may be better than cash. A 10# bag of loose SILVER coins, bags of coffee, sugar, or other staples, and of course, lead, are all needed items and can easily barter!
I bought 150 gallons of gasoline a couple of months ago, at $149.9 in jerry cans (SAFELY STORED), and 5 cases of oil. My auto and motor home also have full tanks. I have 6 propane tanks, as well (gotta feed the weber grill!!!).
It's dead, Jim...
You might get some of the gasoline preservative you put in gas to keep it from going bad. I know nothing of it but have heard about it.
Good for you but, you'd better put some stabilizer in that gasoline.
FYI, a few of the essentials I've accumulated are: Expedition tent, Grain Mill, Air rifle, Solar cell, packs, GPS, Maps, Best water filter Katadyn makes, axes, machete, knives, rechargeable batteries, camping essentials, 6 months food for now, silver coins, ready cash safely stashed, ammo for the big guns and still accumulating. :-)
Praying of course that it will not be needed except for recreation or normal use!