Sorry if any derogatory implications came with my opening of this posting, that was not my intent. I filled up at a Shell station in Blaine WA, it was under a covered fill-station and did not appear to intended for truck use. The difference in Canadian to US Diesel is...(quote from Environment Canada)
Environment Canada is considering potential amendments to the Sulphur in Diesel Fuel Regulations that would add minor flexibility to facilitate the 2006 introduction of lower sulphur diesel fuel for on-road use. The flexibility would align with a change that the U.S. EPA has announced to allow a slightly higher limit of 22 mg/kg.
So the sulphur levels, whether or not that had anything to do with it I dont imagine so. I do run into a sluggish batch of diesel in Canada as well, especially when fueling at petrocan or supersave, i like to stick to Shell's premium grade diesel, i find that often I get optimal performace when running that. Its hard to find and not many stations accomadate more than one brand or diesel. Are there various levels of diesel available in the US as well? IM not familiar. THnks and sry about sounding derogatory!