there must be some sort of regulations here in hell(I mean Arizona) because every station I've been to only carries 91 octane for their premium. I usually buy from Costco becuase they are 15-20 cents cheaper than everyone else. If I do buy brand gas I try to get Chevron with Techron.

87 all the way.

the absolute best i can get in my city is 91.

Run Mobil 93 in everything i own except the maro she gets 94;Love that gas mileage!!

although i'm not "special" like many of you w/ the superchargers (i wish i had one), i feel guilty seeing that almost everyone of y'all who posted uses the higher octane levels, and I use the lowest that i can get. It'* to expensive to get the good stuff.
by the way, do all of y'all hate shell? :?

Don't sweat it, AJ. Your car was designed to run on 87 or higher.

Last time I filled the 92 octane was 1.55, 13 gallons of that went in.

I don't hate Shell, I prefer Kwik Trip. They are open 24 hrs, have a good selection of drinks and snacks and have bathrooms that usable.

92 is hovering just under the $2 range here.

I use 85 octane here in good old Wyoming. Right now it'* at 1.61 a gallon. Can only get a high grade of 91 here, and it'* almost 2.00 a gallon. Must have something to do with the altitude that I can't get a higher octane. Oh well mine runs good on the cheap stuff.