Crude oil advanced 15 cents to $71.47 a barrel by 0247 GMT; London Brent crude gained 17 cents at $70.88. Gold bullion opened Friday at a bid price of $650.80 a troy ounce, higher than $643.75 late Thursday. The dollar gained against the euro. The euro bought $1.2785 in morning European trading, down from $1.2793 in New York late Thursday. The British pound remained virtually unchanged, moving up to $1.8718 from $1.8717. The dollar advanced to 111.92 Japanese yen from 111.76 yen.