How long will you let gas sit in a gas can? -
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Unread 02-02-2009, 08:23 AM   #1
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How long will you let gas sit in a gas can?

I usually have one of my two gas cans on my tire carrier full all the time.

But gas goes bad so I don't like to let it sit too long before using it.
The question is how long is too long? How long do you let your gas
sit in gas cans before you rotate it?


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Unread 02-02-2009, 10:10 AM   #2
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Six months give or take. But I've had a can for my mower and that thing gets filled up every couple of years and the mower runs fine.
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Unread 02-02-2009, 11:11 AM   #3
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Add Sta-Bil fuel stabilizer which will keep the gas from going bad. Just about any boating supply store carries it and so do most automotive supply stores.
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Unread 02-02-2009, 12:57 PM   #4
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sta-bil is good stuff. put some in the generator after hurricane katrina. didn't expect it to actually keep the gas good, just didn't want it to get/gum up. hurricane gustav rolls around (YEARS later) and i fired that generator up on the same gas.

FWIW though, why don't you just fill your tank with the gas cans when your at the pump and then top off the tank and refill the cans at the same time?
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Unread 02-02-2009, 04:06 PM   #5
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I had 5 gal of gas sitting in a can for about a year...I forgot it was there. I found it about the time gas prices were going through the roof last year and couldnt stand the thought of wasting it. I used it in my lawn mower all summer and didnt have any trouble....probably just lucky. I figured if it killed the lawn mower so what.
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Unread 02-02-2009, 04:45 PM   #6
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I'm in the same boat man.

I have one Jerry can I always keep around and take with me on off-road trips. The longest I have ever let it sit was a month. I usually put it in my fuel tank when I refuel then put new gas back in the can.

Gotta cycle it.

I've heard good things about those gas stabilizers though. FWIW.
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Unread 02-02-2009, 05:04 PM   #7
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I use Sta-bil in my boat all the time. never had a problem with it starting in the spring. it's supposed to stabalize fuel for 1 year. I add it to my lawn mower gas tanks also, more in the fall so the fuel tanks in the weed eater, chainsaw, tiller and mower/tractor have it for the winter.
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Unread 02-02-2009, 05:45 PM   #8
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ive had sta-bil in my minibike gas tank for about a year and 3 months. of course i would drive it and fill it every now and then, but its still lasted and runs perfectly.
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Unread 02-02-2009, 06:51 PM   #9
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In a passenger vehicle...if I was sure there was no water in it, I'd feel ok using gas that was 5-6 months old.

If it's going in a lawn mower or something like that, I don't really worry about it.
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Unread 02-03-2009, 06:58 AM   #10
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I use the gas stabilizer in my two cans and change it mevery couple of years. Never had a problem using it.
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Unread 02-03-2009, 08:33 AM   #11
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Gas degrades very quickly from what I read, 2-3 months. I use stabalizer all the time. When I store a seasonal engine I add fuel stabalizer and run engine till it runs out of fuel. Keeps what is left inthe bowl and lines from gum up. If the tank is metal I leave it full of stabalized fuel so it doesnot rust. Still need to run the stabalzied fuel tru the engine. I store my CJ in winter and put stablizer in the fuel tank before storage. The stuff work and is well known.

Stablized fuel is good for like 1 yr max but have heard more. For the extra gas tanks use stabalizer and rotate the fuel every spring and fall.

I have been using the stuff for 15 years or so.
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Unread 02-04-2009, 09:19 PM   #12
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I have used stabil in a lot of stuff. so i didnt think twice about using it in my seadoo. last spring i could not get it to run worth a crap. i ended up draining the tank and putting fresh gas in it. the seadoo is supercharged not sure if it didn like the stabil are what any ideas.
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Unread 02-06-2009, 10:41 AM   #13
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Sta bil

Sta bil
Good stuff, I was hurt and could not ride the motorcycle for over a year, I used it and it was good to go and it has six carbs on it.
Any gas stored will lose some octane quality, if it has been stored a while just add a little octane boost to it to bring it back up.
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