When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
It is true that in an area served by tankers or barges, stations getting gas that day will get the gas of the refinery that filled the tanker or barge. That can change from one delivery to the next. But the same is true with pipelines. One batch will be from one refinery, the next from another. The only difference is that the pipeline supplied areas get more batches, and they mix in the large storage tanks at the pipeline terminal. So areas served by pipelines will have more uniform product day by day than areas with more sporadic deliveries.
Shopdog, you keep making the universal statement that all gasoline comes from the same pipe, tank, or barge all the time, and that simply isn’t the case. I’m tired of making the argument, and I’m sure people are tired of reading about it, so I’ll just make one last point. Several notes on the forum have mentioned the problem that Shell had with sulfur in Louisiana and Florida. If it were true that everybody got gas from the same tank, how do you explain the fact that only Shell stations were affected. If your statements were universally true, then all stations in the affected areas should have been affected, and they were not.
The truth is that many areas of the country are served directly from refineries using distribution systems totally owned by that company. In such areas, and particularly around rivers and the coast, the little guys buy from whoever they can. Sometimes, that’s a big company, and your statements apply. But sometimes it is not, and you risk the fly by night barge, tanker, or other shipment. The risk may not be huge, and as shown in the Shell incident, even the big guys screw up sometimes. But unless you reliably and specifically know that the gas in your area comes from a major or pipeline terminal, there is some risk.