[twobjshelbys]

Originally Posted by twobjshelbys

Spot on. Political bent aside, the main reason for the sudden spike is the change over to winter formulations and the self-created shortage they make so they won't be stuck with a bunch of gas of the wrong formula.

Speaking of which, see here:

Pure gas - no ethanol - comment time ends 11-Oct

That same topic contains a very good analysis of the localized formulation issue by Chip Beck.