and De Haan notes that the oil sent from Canadian fields is of a quality of oil (heavy sour) that the U.S. can not easily replace. He says the total impact to gas prices in these areas could be 25 ...

in the U.S., that would be light sweet crude oil imports into the Gulf Coast refining system. They said the other end of that scale is the 2.2 million barrels per day of Canadian heavy imports ...