I need to take a video of the fuel depot out near the mouth of the river here! Trucks with Shell, Chevron, Love's and a host of independent fuel haulers all use the same tanks to receive their truckloads of fuel which goes to the underground tanks at the respective stations.
How long it is stored in the underground tanks at each location and how well that fuel is maintained will directly affect the fuel quality.
I agree, buying fuel from places that sell more fuel is a good thing. My local small business sold so little fuel, one time when he got too low, he just put an out of fuel sign on the pump. I drive my tractors up there to get fuel, so finally asked him when he was going to get more. He said he sold so little diesel that it didn't make sense to stock it. I suggested dropping the price at the pump by a few pennies, to or below the larger competitor down the street. He said "then I won't make anything off of diesel"! I suggested that he start watching diesel truck owners and see how many buy fuel and drive off, compared to how many come in and buy something in the store, as compared to gasoline customers. He apparently was satisfied with the outcome, because he has been keeping it one cent below the nearest competitor since 2019. I see a lot more diesel pickups, (especially lawn service) now buying diesel at his single diesel pump.
David from jax