Here in Illinois, the EPA has mandated four separate zones, each with its own formulation, in each of the 3 grades ... for a total of 12 different products, at any given time.
This whole set of regulations changes from summer to winter blends for a total of 24 different products in the course of a year ... all of which have at least 10% ethanol.
Fortunately most of our refining is done locally and most of the crude is pumped in from Canada.
Now ... what's all this nonsense y'all are kickin' up down there. We've had close to 6" of rain here in the Chicago area since last night and the remnants of IKE aren't even due here 'til tomorrow.
(former Houstonian, Humblelite, and Springster who was planning to vacation Galveston week after next)
On this thread, I didn’t want to get as specific as you did about the “formulations”, but I’m glad you did. NN: Repeat this story several times over to understand the “formulation” garbage - I’ve seen numbers of “formulations” that are mandated ranging from “only a dozen” by those who support this silliness up to well over a hundred.
My guess is the latter is closer to the truth, but which ever is the truth, “formulations” cost us all more money, and make life much more difficult for those who put the gas in your car - and what is gained by doing that is quite minimal.