UPDATE 10-U.S. crude ends at 6-yr low on China devaluation, OPEC data

U.S. crude settled at a more than six-year low on Tuesday after China's currency devaluation raised questions about oil demand in the No. 2 consumer and a new OPEC estimate showed non-member producers are likely to keep output high despite low prices. 

http://www.reuters.com/article/2015/08/11/markets-oil-idUSL3N10M1KU20150811