Phillips 66 (NYSE: PSX) has transitioned in the past few years from being a young spinoff company, to being a major player in North American oil. It is the largest importer of Canadian oil to the U.S., and that's just one of the feathers in this company's cap. In this video, Motley Fool energy analyst Joel South takes a closer look at that feather, and tells us what some of the factors are that contribute to the big competitive advantage that Phillips 66 holds over other companies in this sector.

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