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.
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?
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.