Originally Posted by DBH
Octane alone will not have much, if any, effect on MPG. You would notice more of a difference in performance and/or knocking of the engine.
You paid $4.15/gal in NJ? Boy are the goudging!! I paid $3.79 for my last fill in PA where we generally pay much more than NJ.
its nuts... i am in central nj but inland from the shore... 3.99 is what 93 octane is currently...
go towards the shore 4.10+ ,
i work up in north west NJ and its 4.35 + for 93 ..