Originally Posted by Crossfire Trail
91 Octane is the norm for premium, here anyway. Right now it's the lowest it's been in a while. My Hess station is at $2.95 per gal. Last week it was $3.09 that's a fair reduction. I wish it were back to the days when it was .39 cents a gallon, that would be great. 
Typically in my area premium is 93 Octane, but I have had a SI tune for 94 Octane, so I need to add an Octane Booster to gain 10 points. I also have a Sprint-Booster installed, which has degraded my MPG.
So I don't think I would be considered a poster boy for MPG, but I do get about
30 MPG; if I keep my foot off the pedal, coast alot, draft behind semi's, and always drive on the down side of hills!
By the way if you have never been in Illinois; hills are hard to find!
XFH