I know that untreated gasoline ruins in a few months, but does anyone know about kerosene? What is its untreated shelf life?

Thanks.

 

My kerosene is in a 5liter steel container & hardly gets used & is now about 10yrs old & seems ok (smells & burns ok)

 

I have stored untreated premium gasoline in tight steel containers for 10years with no apparent degradation. A few years ago, I revived an old car that had not been driven in over 5years--the minor problem in getting it started was a frozen fuel injector (throttle body)--while its fuel smelled stale, it ran OK and I used it up.

Keeping untreated fuel in small engines is not recommended.

Regarding kerosene, while it may smell stale, it will always burn--vented outside 275gallon tanks may tend to accumulate moisture.

 

I use Alkylate petrol in my Primus Himalaya Omnifuel stove. I store it in 10 litre plastic cans. It take me about 4 years to use that amount. I have never experienced any problem even after 4 years. I store it indoors in stable temperature. I think the main culprit is of condensation. That is likely to build up in a car fuel tank. But this will not be a problem stored in a closed can. Stored in stable temperatures