[HeyLaughingBoy]

I dunno. There are a lot of gas stations and truck stops last time I checked. Stuff stored in tanks underground tends to be usable for quite a long time.

[User23]

Pure gasoline is good for about 6 months. E10 is good for about 3 because ethanol is so hydrophilic. Fuel stabilizer can stretch that to a couple years, but gas stations generally don’t use it.

[HeyLaughingBoy]

In theory and running high performance motors at rated capability. In the real world I use years-old gasoline all the time in small engines.