I will point out that brands of gas don't necessarily mean a lot. Maybe the additives going in to meet the particular brand's requirements, but my father worked at a major oil company's tank farm where ships came in to unload, and trucks came in to pick up loads of gasoline, heating fuel, etc for deliveries. And oil companies frequently provide fuel to other companies, back and forth, as needed.

And on my fantasy override button--who knew?? They have that exact capability--on at least some Priuses and (according to a board on another site) the 08 Highlander Hybrid? Where's mine?? Hehe.

Well so far current tank after 3 one-way commutes (from yesterday morning's refill) I'm down to 46.x mpg. Looking forward to finding out what I can do on a whole tank off the highways.

It's odd though how different people find their great mileage in different ways--some get it mostly on the highway (my interstates are too hilly to get great mileage but even then I can get up to 40ish either direction on a good day), some off the highways... I'm still trying to figure out the deal with "heretical mode" so not sure where that fits in.

But hoping for a tank in mid-40s! Problem is one bad day of errands could use enough gas to drop my whole tank's average. :\