There'* one Mobil station whose gas I get about 4-5 mpg more on. Mobil and Meijer have proven to have good suppliers and tank upkeep across the state of Michigan.
Citgos are usually pretty good, except the one in Ubly, MI. That gas doesn't light on fire if you spill it on the ground! I had a weed wacker die while trying to use that junk. Put in some decent gas, and it fired back up.
Haven't tried Shell much, so nothing good or bad to say there. I know a few little no-name stations that have gas better than any major company can offer. Too bad they're in the middle of nowhere.
There'* a Marathon across from what used to be Amoco and is now BP that is always at LEAST 10 cents lower than anywhere else within 25 miles. Quality of gas is pretty ehhh, but you can't really beat a deal like that. It'* the only Marathon I've been to.
Will shop anywhere but
at Speedway or Sunoco. I hate the alcohol blend at Speedway. my 90 GMC C1500 went from 25mpg to about 17 on a tank of that. Ewwww. I've gotten some watered down crap from Sunoco, especially in Ubly, MI. Had to burn it out of my tank PDQ because my car ran like I do with my bum knee
The occasional Amoco station has sucked majorly, too.
I run 87 because I'm a poor college student, and I get 28mpg if I drive nicely, 22 if I use the supercharger for a little fun. I did fill up with some 89 the other day since I almost ran completely out
That'* pretty close with the 32mpg I get in my Cavalier. I'll take the comfort and lower mileage any day
My $0.02. Can't tell I drive around Michigan a lot, eh?