Is it possible the quality between gas brand differ that much from your experience? It seems that my gas burns substantially quicker using the nearby grocery store brand gas (used to use Valero, that is a bit furthur away). I'm reconsidering now on going back w/ the Valero (or Shell, where I take the BMW/Audi/Honda). Both places I use 89 octane for the HEMI. Your experiences/conclusions/thoughts/etc.?