About Premcor

About company

Premcor is one of the largest independent petroleum refiners and suppliers of unbranded transportation fuels, heating oil, petrochemical feedstocks, petroleum coke and other petroleum products in the United States. The company owns and operates refineries in Port Arthur, Texas, Lima, Ohio, Memphis, Tennessee and Delaware City, Delaware with a combined crude oil throughput capacity of approximately 790,000 barrels per day.