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The Detroit Heavy Oil Upgrade Project (Detroit HOUP) will add new equipment at Marathon's Detroit refinery – Michigan's only refinery – to process additional heavy crude oils, such as those from Canada. This project will increase the refinery's capacity from approximately 106,000 barrels per day (bpd) to 120,000 bpd, adding more than 400,000 gallons per day of clean transportation fuel to the marketplace.