Originally Posted By TAP:
So I keep a bit of gasoline at the house, treated with Pri-G and rotated every 12-15 months.  Never had any issues with it and I rotate it only so the shelf life is preserved, recognizing that the Pri-G will hold it a lot longer than a year.

Someone asked me the other day- do I store winter- or summer-blend gas?  Well, it actually shifts year after year as the rotation is not spot on in the same month every time.  

Is there an advantage to either summer- or winter-blend in terms of storage stability or anything else?

Originally Posted By DasRonin:
I have 5 gallon "Safety" cans and high quality Jerry cans (Wavian brand Jerry Cans 0.9 mm cold-rolled steel... where VEVOR brand Jerry Cans are typically made of
thick, cold-rolled steel only (0.8mm)). I have used StaBil and have gone 3 years plus storage with no problem. The Safety cans vent in the summer (after a pressure which is calibrated is exceeded) as the volume expands in hot weather. (stored in a non-climate controlled structure) In cold weather they can have slight vacuum and a "hiss" when the cap is opened. In any case it is uneventful to release the cap in hot or cold weather.

The Jerry cans are sealed tight with no way to release pressure when the heat causes expansion. So... with the can sitting level if there is a vacuum there will be a "hiss" when opened, however if the heat cause expansion pressure... it will vent a spray of gas vapor and droplets which could, if near a flame, ignite at worst or spray the mist on you and your clothing. No one wants to have the smell of gasoline on their clothing, or worse. To minimize this problem of the gasoline mist, I tip the can back on the rear corner to position the opening up when opening the Jerry can.

When there is a pressurized Jerry can, it can also be noticed as the sides of the Jerry cans will bulge outward. If there is a vacuum the sides may be concave. I have had Jerry cans which held a vacuum cause the can sides to be concave when empty. In other words stay the shape caused by the vacuum. I suppose once they are refilled, the weight of the gasoline will return to normal shape. Anything worth doing is worth over doing mentality... I took a Jerry can spout and cut it so I could seal the fuel path with JB Weld and clamp a tire valve stem on the vent pipe. I can put that cap on an empty can that remained concave, then use a small bit of air pressure via my air compressor just a bit until the can returns to OEM shape.

ETA... I am not rich. I bought my Wavian Jerry Cans when they could be found, four cans for about $125.00 shipped. Now they can cost that much for ONE Jerry Can.  I have at least a dozen Wavian (should have bought more!) and about half a dozen Eagle Safety cans.
https://www.ar15.com/media/mediaFiles/70257/jerry_can_widget_-1_jpg-3684394.JPG

Originally Posted By LoneMouser:
Winter-blend gas has a higher vapor pressure (more volatile).  Easier cold starts in cars during winter. But in storage, it evaporates faster and can gum up carbs more quickly.

Summer-blend gas has a lower vapor pressure (less volatile).  More stable in heat and storage.  Less prone to evaporation and varnish buildup.

Summer-blend is better than winter for storage.  Ethanol-free summer-blend with stabilizer is best.

Originally Posted By JackwagonJim: I store 50gallons in various cans..jerry cans to older plastic ones from Lowe's. All I store is ethanol laced regular. Treated with stabil. I rotate every fall. Never had any issues. Primary use is in my ATV, and generator. I run the carb dry on the genny after every use, which is maybe 2 times a year depending on our outages.

Originally Posted By backbencher:


Laughs in propane genny.

Originally Posted By LoneMouser:

Maybe that's more related to performance, winter blend is better "in-use", particularly in cold weather, so store that.  But for long-term storage specifically, summer-blend.  Far north GA they switch around September every year from what I know.  I've had stabilized summer-blend ethanol free work no problem after 3 years.



Solar generator has entered the chat.

Actually have all three; gas-only, dual with liquid propane plumbed to a 500-gallon tank, and a 240 solar generator.  Can run any of them through a sub-panel for the important stuff in the cabin.  We get a lot of power outages where I live and the absolute best thing about that solar generator is it lets me sleep all night.  Solar generator sits in the cabin available to run the well, refrigerators, outside lights (although we go black usually), etc. all night with zero noise.  I get to sleep AND I can hear the bumps in the night.  I use the propane genny to top-off the solar during the day.  Own solar-panels but only used them one to test.

Originally Posted By Cptbwst:


Laughs in reduced power output.

Originally Posted By onesureshot:
I just "found" four 5 gallon Wavians full of ethanol-free with Pri-G that I filled in 2022. They were on a shelf in my garage that I had put other things in front of and completely forgot about them until this thread popped up. I have not opened them yet to inspect, but am trying to decide what to do with them.

The only gas equipment I run any more is a tiller, but even if I go over everything twice will only use about a third of one can. I have a couple generators, but almost never use them for anything, so that would not use much either.

Do I dare to add a bit to the tank of my truck before filling up for the next little while until I burn through all of it?

I can't believe I spaced these, out of sight out of mind I guess.

Originally Posted By onesureshot:
I just "found" four 5 gallon Wavians full of ethanol-free with Pri-G that I filled in 2022. They were on a shelf in my garage that I had put other things in front of and completely forgot about them until this thread popped up. I have not opened them yet to inspect, but am trying to decide what to do with them.

The only gas equipment I run any more is a tiller, but even if I go over everything twice will only use about a third of one can. I have a couple generators, but almost never use them for anything, so that would not use much either.

Do I dare to add a bit to the tank of my truck before filling up for the next little while until I burn through all of it?

I can't believe I spaced these, out of sight out of mind I guess.

Originally Posted By thederrick106:



I would just use them in your vehicle but not all at once.  Add 5 gallons to 1/2 tank and run it.  Maybe a visual and smell check if you are concerned but being non ethanol and in good cans it's probably fine.