Really, gas varies from area to area. Typically, "cheap" gas stations (ie. AM/PM, CostCo etc) will not be good quality. But we have also been to the so called "top tier" stations and seen horrible quality as well. It is more a trial and error process, but we really only go to the stations that we have tried and know is good quality.
I know it is not much help, but gas quality can really make your vehicle run horribly.
I know it is not much help, but gas quality can really make your vehicle run horribly.