BTW, I don't know of any local brand of gas that does not contain ethanol. If you know of one, please tell me.
I guess ethanol does indeed have its downsides, as Cyber370 pointed out so well.
Gasoline Expiration - Ethanol Blend Fuels Have a Short Shelf Life
I hope the above link overstates the problem. I'd hate to think that after 3 months I'd have to siphon a full tank of gas out of the Z and somehow haul a full tank's worth of gas back to, and re-fill the stored Z.
I suppose I could also add some Drygas
https://www.yourmechanic.com/article/what-is-dry-gas