Post by tweell
Having some gasoline stashed away just in case is a good idea. It doesn’t take TEOTWAWKI to cause a gas shortage here in Arizona — it happened in 2003 because Kinder Morgan didn’t maintain the gas pipeline.
Whether it is for a generator, a car or just your lawn mower, gasoline is handy to have around.
How long can you store that gasoline and still depend on it? Well…
Most gasoline at the pump has 5-10% alcohol in it, which shortens the storage life. Alcohol is hygroscopic, which means it attracts water, and engines don’t like water in their gas intake. In as little as four months, that gasoline may be unusable as is. There are a few gas stations (usually catering to racing) that sell non-alcohol gasoline: http://pure-gas.org/index.jsp has a list. Ethanol-free gasoline has a storage life 2-3 times as long as the standard gasoline does.
Next, there are gasoline additives that will keep the gasoline from becoming unusable. Sta-bil and Pri-G are two brands that are readily available. They work. I had a truck sit for over a year, but with Sta-bil in the tank it started up just fine. There are claims that adding the treatment to old gas will make it usable again. I cannot verify those claims (and the additive companies don’t say it will), but treating the gas at the start of storage definitely works.
These will allow standard gasoline to be stored for a year, you’d be able to store treated non-alcohol gasoline for up to two years.
For long term cache storage, there isn’t much out there. The only long term cache storage gasoline that I know about is a combination of toluene and white gas. This is done in Australia to avoid high gasoline taxes, but here those materials are taxed much higher, so it isn’t as well known. Three gallons of toluene and one gallon of white gas (Coleman fuel) will make four gallons of 90 octane gasoline, and this takes over ten years to go bad, if mixed when you need it. At over $15 a gallon, it had better be good.
Good policy as preppers is to use and replace our preps before they go bad.
This applies to gasoline as well as food and water. Date your gasoline, treat it when you get it and cycle it like everything else.
Take care, tweell