[Errant]

Yep. If there was a storage problem with 100LL, the FAA would require shelf-life records and small aircraft that sometime sit for months, would be falling out of the sky on a daily basis.

I've used it in my airplane, motorcycles, lawnmower, power-saws, generators and etc with absolutely no problems; storage or otherwise. But I won't use it in my trucks unless I have to.

There is another fuel probably worth investigating for unlimited storage life: butynol or butyl alcohol. And of course propane or CNG if convert your vehicle to use these.

[count-your-change]

I've never stored LP gas for more than a year, year and a half. No problems but for all fuels fresh is best and using the older stock up is probably the best idea.

As for the butyl alcohol, I have no experience with it but most alcohols do store well. (Yeah, that kind too!)