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I have a 5 gallon can of gas from 8 months ago. I did far less yard work than I intended. I have fuel additives I could use. Joogle says 3-6 months, but I am looking for "real world" answers.

Please only answer if you know what you are talking about, and remember, I already used the internet to try to find my own answers.

Edited: Fuel is 89 Octane with UP TO 10% ethanol added.

I have a 5 gallon can of gas from 8 months ago. I did far less yard work than I intended. I have fuel additives I could use. Joogle says 3-6 months, but I am looking for "real world" answers. Please only answer if you know what you are talking about, and remember, I already used the internet to try to find my own answers. Edited: Fuel is 89 Octane with UP TO 10% ethanol added.

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[–] • 2 pts

I've been storing a car with the same 89 octane gas for a year and a half. Every 6 months or so I start it and assuming the battery doesn't need charging it fires up immediately. I considered putting a fuel stabilizer in but I saw a video that compared several that are on the market and there was no benefit found in using them. The conclusion was that gas without ethanol is the most stable, mainly because ethanol is hydrophilic.

It's 'common knowledge' that gas goes bad but no one seems to know how long it takes to happen. Clearly 3-6 months is very conservative estimate.

[–] • 0 pt

Butylene is already in your gasoline. Butylene is fuel stabilizer.