I took a photo of the Castrol Edge that has "made in Canada" on the jug at Canadian Tire. It has Dexos code suffix 59. Another motor oil with code 59 is AC Delco. The Castrol is distributed by Wakefield Canada. I suspect this is made by Suncor but I'd appreciate any help in confirming that. Suncor owns the Petrocanada brand. There are roots back to BP, as Petrocanada bought the BP Canada refining assets in 1983. Anyone know there code 59 leads? Thanks.