Best Fuel Preservative for Pure Gas ???

#1Flyboy wrote:
I’ve seen 2 year old a gas that looked & smelled very fresh; airplanes do a lot of sitting so I’m thinking that refineries add a stabilizer!??!

The spec for Avgas is zero gum in storage. There is no Stabil in it. For my small engines, I fill a can with clear gasoline(no ethanol), then I add a double dose of Marine Stabil. Marine Stabil is much more concentrated than the red stuff they sell. If you use a double dose of Marine Stabil, and have in in a sealed container in a cool environment, it can stay good for two years. I never have any trouble with my chain saws etc. with this method.

Son of Norway wrote:
I buy pure (no ethanol) gasoline that I keep on hand in a couple of 5-gallon cans for snow blowers, lawn mowers, power washers, portable generators etc. The STABIL products that I buy indicate their use for alcohol-blended fuels. Are there any fuel preservatives specifically for pure gasoline and which one would you recommend? Thanks for your help.

Agree with Old Wizard - unless you go through a 5 gallon can once every decade, I probably wouldn't worry about it going bad. Even stored for that length of time it will probably still work.
Honestly, I tried fuel stabilizer about 10 years ago, and there was no noticeable difference in the fuel quality that I put it in, versus the last 10 years of not bothering. I've left ethanol laced, and pure dino, gas in my shed over the winter and it still works, when I use it next year in the mower/tractor.
Some believe that some engines might prefer you use it all up, to dry, before long term storage. However, I've never done that either, and had no problems.

I’ve seen 2 year old a gas that looked & smelled very fresh; airplanes do a lot of sitting so I’m thinking that refineries add a stabilizer!??!

Son of Norway wrote:
I buy pure (no ethanol) gasoline that I keep on hand in a couple of 5-gallon cans for snow blowers, lawn mowers, power washers, portable generators etc.

Fill cans one at a time. Gasoline will easily last 1 year in a clean well sealed container.

in case it makes a difference to you AvGas is low lead not no lead...fyi

Not quite what you are asking, but since you keep a small amount for extended time, an alternative may to go to your local private airport and buy 100 octane av gas. It does not need stabilized, costs more but does not need stabilizing so cost is about a wash.
We have been doing it for years for our 2 cycle tools, and they love it.

Stabil works for any gasoline. You should always buy Premium for small engines. I would stick to a top tier gasoline.

Moisheh