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Author Topic: Maintenance Monday: Shelf life of gasoline Back to Topics
PD

Moderator
Message Posted: Jun 14, 2010 12:02:52 PM

There's bound to be a few of us who are curious how long the shelf life of gasoline is- whether you have a vehicle in storage, let your boat sit all winter, or if you have lawnmower gasoline that's been sitting a while.

There's not a magical sell by date for gasoline like there is for other products, but gasoline will slowly deteriorate over time and eventually be worthless. I'll go over a few ways to keep gasoline for years.

First, don't expect gasoline to last long in an open air container, such as a 5 gallon gasoline container. Unless you've sealed your red container, the air will slowly suck the life out of the gasoline. Like I said, there's no magical date, but after a few months, gasoline will deteriorate to the point...

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REPLIES (newest first) Post a Reply
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46chief
Champion Author Indiana

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Message Posted: Sep 15, 2014 12:15:18 PM

Good info.
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ColoradoPapa
Champion Author Colorado

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Message Posted: Sep 8, 2014 7:12:10 PM

I had to clean the carburetor of a John Deere riding lawn mower three times in order to get the old fuel and free it of varnish. Told the owner to run the engine until it runs out of fuel before storing it for the winter.
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nanabee14
Veteran Author Orlando

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Message Posted: Sep 5, 2014 1:00:31 AM

ok that was long but necessary, now I have a better understanding of gas storage/usage limits
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JFC
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Message Posted: Sep 4, 2014 10:09:25 AM

very good information....tnx
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FogCitySpotter
Champion Author San Francisco

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Message Posted: Aug 30, 2014 12:06:20 AM

Good to know
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gasmask78
Champion Author Virginia

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Message Posted: Aug 26, 2014 3:36:35 PM

Q
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Raider44
Champion Author Allentown

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Message Posted: Aug 25, 2014 6:44:52 AM

"First, don't expect gasoline to last long in an open air container" - stating the obvious.
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Gsguzzlr
Champion Author Toronto

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Message Posted: Aug 24, 2014 7:01:38 AM

I put fuel stabilizer in all gas running engines and run the engine for a 1 or 2 minutes.( lawn, outboards, chain saws, etc.) and fill the tanks. Also add 2 cycle oil in the plugs at TDC to prevent condensation, it protects the engines. A few pulls in the spring to get the oil out and all is good. In The winter it may drop to 40 below in Canada.



[Edited by: Gsguzzlr at 8/24/2014 7:03:39 AM EST]
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tklsr
Champion Author Akron

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Message Posted: Aug 23, 2014 7:53:21 PM

okay
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Boyrr
Champion Author Allentown

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Message Posted: Aug 23, 2014 6:35:10 AM

you have to pay attention to your machines
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twt
Champion Author Virginia Beach

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Message Posted: Aug 17, 2014 6:21:14 AM

Good post.
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monothome
Veteran Author Washington

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Message Posted: Aug 12, 2014 3:03:50 PM

I don't empty the tank in the fall, I just cross my fingers in the spring.
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xbAG
Champion Author California

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Message Posted: Aug 9, 2014 8:48:53 PM

I do not store gasoline.
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gasmask78
Champion Author Virginia

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Message Posted: Jul 31, 2014 11:17:30 AM

Yep
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outdoortechie
All-Star Author Nashville

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Message Posted: Jul 22, 2014 11:03:33 PM

Nothing good lasts forever!
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DoggII
All-Star Author Omaha

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Message Posted: Jul 22, 2014 1:17:45 PM

GOOD INFO!
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fourdezzzz
Champion Author Atlanta

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Message Posted: Jul 17, 2014 11:22:15 PM

Yeah!
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FordFlex09
Rookie Author Orange County

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Message Posted: Jul 16, 2014 1:13:00 PM

if it is going into storage for a long time, is best to drain the fuel tank and run the engine till it stops. after a while the fuel pump gums up and it takes a bit to get it running again, unless you change the pump.
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Trucky3212
Champion Author Missouri

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Message Posted: Jul 15, 2014 7:58:59 PM

If I plan on keeping too long I will throw in an additive to the mix.
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Raider44
Champion Author Allentown

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Message Posted: Jun 21, 2014 12:05:58 AM

stays usable longer than I thought.
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gasmask78
Champion Author Virginia

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Message Posted: Jun 14, 2014 2:02:39 AM

cool
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Tundralimited2009
Champion Author Dallas

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Message Posted: Jun 7, 2014 1:25:16 AM

Good info for everyone
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agrico
Champion Author New Orleans

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Message Posted: Jun 6, 2014 9:20:32 PM

don't own a lawnmower or boat and certainly don't have that issue with my cars
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willp99
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Message Posted: Jun 6, 2014 10:22:04 AM

I have had that problem and had to rebuild the carburetor on the mower.
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2parrots
Champion Author Massachusetts

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Message Posted: Jun 5, 2014 10:23:14 AM

If your lawnmower has a 4-cycle engine ,you can put any unused gasoline in your car or truck .
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JOHNJOEYJOE
Champion Author Texas

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Message Posted: Jun 5, 2014 6:57:26 AM

Never buy more than you can use in 30 days.
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Raider44
Champion Author Allentown

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Message Posted: May 28, 2014 6:56:15 AM

who stores their gas in open containers?
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Tundralimited2009
Champion Author Dallas

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Message Posted: May 28, 2014 1:21:33 AM

Good useful info..
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Hitnmiss
Champion Author Iowa

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Message Posted: May 27, 2014 5:52:43 PM

I use the additive Stabil that will keep gas fresh for several months.
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Royski
Champion Author Los Angeles

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Message Posted: May 26, 2014 10:54:33 AM

Useful, if sparse, information.
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dickie989
Rookie Author Kentucky

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Message Posted: May 23, 2014 12:24:41 PM

I have been using Ethanol Defense by Bell Performance they have been in business since 1909 making fuel additives,longer than any other fuel additive on the market so they must be doing something right and making a good additive
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JOHNJOEYJOE
Champion Author Texas

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Message Posted: May 23, 2014 9:39:14 AM

I don't buy in on this. Ethanol gasoline does not have a long life unless you add a stabilizer and the gasoline will still break down. This is more of an advertisement.
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Badjef
Champion Author Florida

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Message Posted: May 23, 2014 8:27:54 AM

Today's fuel is so much more efficient than that of years ago. We had outboards when I was growing up. Over the winter, the gas would "varnish". That is not the case anymore. It takes a lot more time now.
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Rick52
Champion Author Milwaukee

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Message Posted: May 23, 2014 8:08:08 AM

I want old Gas ..Prices..
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txannlady
Rookie Author Dallas

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Message Posted: May 23, 2014 7:05:47 AM

How do you dispose of bad/old gasoline ?
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CapriceWagon
Champion Author Washington

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Message Posted: Oct 11, 2012 2:27:01 PM

My suburban was sitting for about ten years, it smelled nasty when we first started it again... flushed it out with fresh gas and it seems to be alright now
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driveonby1
Champion Author Toledo

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Message Posted: Oct 10, 2012 1:13:47 PM

The gas stored in a new car tank may still run, but products like Stabil, when run through the engine from the tank, are also a preventative to gumming.
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99dakota
Champion Author Providence

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Message Posted: Oct 10, 2012 6:38:05 AM

It lasts longer than you would think.
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Gas4Gore
Champion Author Detroit

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Message Posted: Oct 8, 2012 6:46:55 PM

maybe use Stabil???
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teafortwo
Champion Author Washington

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Message Posted: Oct 8, 2012 2:48:27 PM


Good information that we all need a reminder of now and then.

Especially this time of year.

Thanks PD ;0}
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Donatelo
Champion Author Dayton

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Message Posted: Oct 8, 2012 2:32:26 PM

ok
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99dakota
Champion Author Providence

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Message Posted: Oct 4, 2012 5:54:01 PM

My mower gas lasts all winter, no problem.
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DucatiRider
Rookie Author Maryland

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Message Posted: Oct 3, 2012 9:36:56 AM

Yep, I always put stabil in my car because I don't go through more than about 4 tanks of gas a year. (Motorcycles are your friends, 60 MPG on a newer 650 without much effort.)
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clpassenubye
Champion Author Los Angeles

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Message Posted: Oct 2, 2012 4:52:34 PM

interesting
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Snowchoux
Champion Author Missouri

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Message Posted: Oct 2, 2012 12:02:01 PM

The gas I get for my mower, I add fuel injector cleaner to it. It seems to keep my mowers engine clean.
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BigHorne1
Champion Author Missouri

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Message Posted: Oct 1, 2012 10:57:23 AM

If you keep gas that long and is sealed, makes it more combustable. So leave it vented and lose it. guess best thing to do is use it up.
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shstew
Champion Author British Columbia

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Message Posted: Oct 1, 2012 9:50:15 AM

Another old story
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gasokie
Champion Author Oklahoma

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Message Posted: Sep 28, 2012 7:28:34 PM

I added a little stabol or whatever it is...to my generator's tank but I don't worry about those little red gas cans for my mowers and I don't worry about my boats. Boat motors must be tough as I park my boat in my garage for the season with gas in the tank but burn it out of my engine. I never have any trouble with it. It's not good to let gas just dry up in your small engines either.
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flagtown25
Champion Author New Jersey

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Message Posted: Sep 28, 2012 8:54:49 AM

Interesting
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VetteBlue
Champion Author San Jose

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Message Posted: Jul 1, 2010 10:00:25 AM

Never had a problem within a year.
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