Well what you don’t say is that the fuel from the three refineries are all stored in the same tank. That would prove your point. So what if they use the same pipes and trucks? How much residual fuel are we talking about in the pipes and trucks? 20 gallons? Pffft. when added to the 10,000 gallons that is being delivered, that is a fart in a whirlwind. You might as well complain that you are not getting all premium because of the pump
I can tell you from experience that there is a difference in fuels. I have “fixed” problem cars by switching fuel brands. Cars unlike people are not subject to the placebo effect.
Rick
-who also drove a truck delivering fuel for Union Oil when I was in college.