<Li> Nanticoke Refinery - (Imperial Oil), 112,000 bbl / d (17,800 m / d) </Li> <Li> Sarnia - (Imperial Oil), 115,000 bbl / d (18,300 m / d) </Li> <Li> Sarnia - (Suncor Energy), 85,000 bbl / d (13,500 m / d) </Li> <Li> Corunna - (Shell Canada), 72,000 bbl / d (11,400 m / d) </Li>

Where does most of canada's oil come from