Here is a link to that fuel study:
http://citeseerx.ist.psu.edu/viewdoc...=rep1&type=pdf
Granted, the scope of the research was for 5-year storage with no special considerations. The report does indicate that even unstable gasoline could be stored in an oxygen-free indefinitely. They back this up with a statement that showed at least 7-years of life. But the study does not indicate an upper bound to the gasoline shelf life, even though I agree 150 years would be quite the stretch.