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Heavy Canadian Oil Weakens After Exxon Montana Refinery Fire

Western Canada Select oil weakened after a March 26 fire struck a process unit at Exxon Mobil Corp.’s Billings refinery in Montana.

Production wasn’t “significantly impacted,” Rachael Moore, a Fairfax, Virginia-based spokeswoman for Exxon, said in an e-mail earlier this week.

Western Canada Select’s discount widened $3.50 to $27.50 a barrel at 3:42 p.m. in New York, according to data compiled by Bloomberg. The refinery imported about 25,000 barrels a day of oil with gravity below 30 API from Canada in December, according to the Energy Department.

Thunder Horse’s premium to WTI added 30 cents to $19.30 a barrel. Mars Blend increased 10 cents to a premium of $15.70 over the U.S. benchmark.

Light Louisiana Sweet’s premium to WTI added $1.20 to $21.90 a barrel. Heavy Louisiana Sweet’s premium increased 25 cents to $23.50 a barrel.

Poseidon’s premium narrowed 40 cents to $14.85, while Southern Green Canyon’s premium declined 50 cents to $15.75 a barrel. West Texas Sour’s discount widened 80 cents to $5.

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