Oil, gasoline up on U.S. crude pipeline leak

Retail gasoline prices increased Monday as crews continued to work on a broken Midwest pipeline that transports a quarter of the oil imported from Canada to the U.S.

In its weekly report on gasoline pump prices, the Energy Department's Energy Information Administration said Monday that the national average for a gallon of unleaded regular was $2.721, up about 4 cents from a week ago. The Midwest showed the biggest jump in regional prices, up 10.4 cents from a week ago to $2.778 a gallon. The average pump price in Chicago was $3.018, up almost 16 cents from a week ago.

The broken Enbridge Energy crude oil pipeline is in Romeoville, Ill., about 30 miles from Chicago. It is part of a system that transports oil from western Canada to U.S. refiners. Marathon Oil Corp., which operates a refinery in Robinson, Ill., about 225 miles south of Chicago, would not comment on whether it faced shortages because of the pipeline shutdown. On its website, Marathon says the refinery produces gasoline and diesel fuel. It has a capacity of 206,000 barrels per day.