{{Infobox company | name = Premcor | logo = | type = | industry = Oil Refining | fate = Acquired by Valero | predecessor = | successor = | founded = | founder = | defunct = {{end date|2005}} | hq_location_city = Greenwich, Connecticut | hq_location_country = United States | area_served = | key_people = | products = | owner = | num_employees = | num_employees_year = | parent = | website = }} '''Premcor''' (formerly NYSE symbol PCO) was a Fortune 500 oil refinery group based in Greenwich, Connecticut. It operated five refineries, which are located in Port Arthur, Texas; Memphis, Tennessee; Lima, Ohio; Hartford, Illinois; and Delaware City, Delaware with a combined crude oil volume processing capacity of approximately {{convert|768120|oilbbl/d|m3/d}} (July, 2007).
Premcor was acquired by Valero in 2005. Valero would later sell the Lima facility to Husky Energy in July 2007 and close the Delaware City refinery in November 2009.
== External links == *[http://www.valero.com/ Valero website]
Category:Companies based in Greenwich, Connecticut Category:Private equity portfolio companies Category:Companies disestablished in 2005
{{US-manufacturing-company-stub}} {{connecticut-stub}}