Gasoline longevity. Just the facts, ma'am.

gearboy · 2005-08-03T09:14:41.000Z

Anyone have accurate information on gas lifespan, assuming your car's stored in a dark, cool, dry garage, not exposed to sunlight? Chevron says gas is good for a year, providing it is so stored at temperatures not exceeding 80 degrees Fahrenheit. A friend with a large car collection so stored says he's had no problem with two-year-old gas strictly in the above conditions. Chevron obviously doesn't want to open themselves to exceptions, litigation, etc. and so understates the maximum "shelf life." As all gasoline is essentially like aspirin, we figure this generalization holds true for other brands. We've noticed that gasoline stabilizers on the national market promise to protect gasoline for "....up to one year." So it looks like these companies offer only gladhanding. Anyone have anything concrete to offer? Please, no hearsay or pontification. Don't try to impress us with aviation, legal, quasi-engineering or baseball jargon. Just the facts, ma'am. We already know about avgas' increased longevity, but that's no longer a convenient option, so please stick to what you KNOW about automotive gasoline life today. Chevron also states that reformulated and California gas are equally or more stable than conventional blends. So please, stay on the subject. No rants about the EPA, MTBE, the good auld days, politicians, [color:\\"black\\"] ad nauseum. Just the facts, ma'am.

Aug 3, 2005 (edited)2.9K views

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