I used to watch Irving Oil’s ships come into their Chelsea, MA terminal on a regular basis, and just assumed that they were bringing something in from maritime

I used to watch Irving Oil’s ships come into their Chelsea, MA terminal on a regular basis, and just assumed that they were bringing something in from maritime Canada because it was closer/cheaper. The Boston metroplex is also served by a number of pipelines that reach New England, which I suspect also makes product from the other end of the pipes cheaper here.