If you look at the bottom of the state sticker on the gas pump, you will see a bunch of numbers (like 1-12 or something like that) with a certain number punched out. Does anyone know what those numbers mean? Is it the quality rank of the fuel? Here in Alabama, I put cheap "spot market" fuel from Jet-Pep stations in my car. The premium price is always 15-30 cents cheaper than surrounding stations.