Good stuff thanks. I hadn't considered filling the tank, since it would seem like it would then make it harder/longer to eventually burn off the older gas. If you have a car in long term storage, and only start it periodically to get the juices flowing, then imagine how long it would take to empty that tank. Is stabil that good of a product that it could protect a tank of gas for years?
And the definition of "long term" is definitely subjective. It sounds like anything less than a year should just be battery and some gas additive. 2+ years or more, then you've got other things to consider.
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock