Originally Posted By: Chris142
Whatever supplier is cheapest that day.
This answer is most likely correct. With Pioneer gas stations up here, I heard they use a different supplier each month, depending on whichever one will do it the cheapest. So I suspect it would be the same with No Frills (or any of the smaller stations up here)
I think that nowadays you're pretty safe to run any gas out there, as long as the station has a high turnaround and the fuel isn't sitting long. I've been buying gas from both Pioneer and 7-11 lately, even for the Corvette and have had no issues.