Which vendor in southcentral Alaska sells the best quality gasoline? What makes it the best? Who sells the worst quality gasoline? Why is it not as good as the best?
I believe that it's all made from either northslope or Cook Inlet crude from either the North Pole or Nikiski refineries and they add the different company additives, so I think it all comes down to additives.
Personally, I've had good luck with Shell. I've had bad luck with Tesoro.