Re: "sour gas" -- sitting around too long
I have no evidence one way or another, but I suspect it takes quite a while for the reactions to take place to any significant degree, upwards of 6 months to a year. I was told in auto shop that if you want to store a vehicle long-term (years) it's best to have a full tank of gas and the use of an additive 'stabilizer' would prevent the gas from going sour. Propane does not go sour, but I'm not sure about diesels or ethanol, but I would imagine ethanol could deteriorate into some kind of acid, probably acetic (vinegar), but that's just speculation.
It's been almost 3 months since I filled my Colt, so if the problem was significant I would smell it, although I did use an ethanol blend since the stupid thing drinks high octane. Luckily for me I've avoided all the crazy hurricane pricing and now it's almost back to what I paid months ago.
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