NEW YORK — U.S. crude oil futures prices fell modestly Friday, while Brent crude oil futures climbed to a six-week high on concerns over continued disruptions to Libyan oil exports. Analysts said an extended cold snap across the Midwest and eastern U.S. provided support to diesel/heating oil futures which climbed for a third day, pushing prices to the highest level since Oct. 10. ICE Brent crude oil for January delivery settled up 97 cents, at $111.05 a barrel, the highest level since Oct. 11, as labor unrest in Libya keeps crude oil output only about one third of typical levels of 1.6 million barrels a day. Brent prices also were supported by indications that ongoing talks between major world powers and Iran won’t soon result in a lifting an embargo that has cut the country’s output by about 1 million barrels a day. After prices settled Friday, U.S. officials […]