CNBC | US oil turns positive, but still near more than 6-year low CNBC U.S. oil prices pared losses and turned positive Tuesday after earlier falling as stock markets tumbled in China, the world's largest energy consumer, which added to worries about global fuel demand at a time of heavy oversupply. Chinese stocks fell 6 ... US oil prices near six-year lows as China weighs Oil Prices Slip Lower on China Worries Oil prices fall further as traders expect rates as low as $30 |