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Sta-Bil is good stuff for engines, and stored fuel, but even it has an expiration date.
Untreated gas has a shelf stability under normal conditions of about three months before breakdown begins occurring. Storage in hot climates accelerates the process.
Sta-Bil treated gas will last up to a year or so, though I would not use it then in an expensive or high compression engine. Carbureted, inexpensive, or low compression devices like mowers or weedeaters would be the best use for it.
Lower distillates like diesel tend to last longer than gas before breaking down.
Theoretically, 100% ethanol sealed tightly should last almost indefinitely.
The closest thing to a stable long-term internal combustion fuel source would be a liquified gas like LP or natural gas. Two 1000 gallon tanks buried in the ground should last small users a long time.
HTH.
TR
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"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat." - President Theodore Roosevelt, 1910
De Oppresso Liber 01/20/2025
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