Fri, 28 Dec 2012 16:18:37 GMT
Oil advances to its biggest weekly gain since August
Oil rose to its biggest weekly gain in four-month period in New York as U.S. legislators are launching a new round of "fiscal cliff" talks scheduled on Sunday to avoid tax increases and spending cuts. West Texas Intermediate added 0.7% on Friday, extending its biggest weekly advance since August. February WTI jumped 62 cents to $91.49 a barrel, while Brent