Originally Posted by papap
I use ExxonMobil mostly. Because I work for them and get discount. As far as different fuel at different station. I can tell you usually every station in an area all get the fuel from the same place. Each brand just adds their own additives to it.
I used one local station for all of my cars and trucks. It was not ExxonMobil.
One of there additives was water. I had about a gallon of water in a 30 gallon gas tank on my Chevy 1500HD.
It was not actually an additive. This particular station just did a poor job o monitoring their tanks.
I know that in San Jose, CA there are two gas pipelines from the refinery in Richmond down to the terminal in San Jose where they fill the trucks. One pipe is for Chevron and the other pipe is for everyone else.
As you said, it is at the terminal that the additives are added.