this post was submitted on 12 Jul 2023
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How long is gas still "good" in a tank? Premium gas, pretty sure it's 10% ethanol.

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[–] KaiReeve 2 points 1 year ago

Afaik there isn't a definitive timeline for gasoline expiration, it simply degrades over time so the longer it sits the more likely it is to damage your engine. If you're worried about it sitting for a while you can add some stabilizer.

Personally, I have let high octane gas sit in a car for almost a year and it still ran, no obvious issues, but I wouldn't recommend it.