I always use premium (93) when filling up, but got to thinking if I should be more selective about what gas station(s) I use since each has their own additives/proprietary blend? I usually opt for Shell when available, however, in my area there are basically; Circle K, Marathon, Sheetz, GetGo, Speedway, and Sunoco.
Should I use one of these places over the others? Will it even matter?
Should I use one of these places over the others? Will it even matter?