CNBC | Oil prices fall 2% on dollar strength, concerns about Libya production CNBC Oil prices turned negative after earlier hitting 18-month highs on Tuesday, the first trading day of 2017, as the U.S. dollar rallied to its highest since 2002. Traders said crude prices were buoyed earlier in the day by hopes that a deal between OPEC ... Oil Futures Turn Lower Oil turns negative on strong dollar after hitting 18-month highs Oil pivots sharply lower on anxiety over adherence to 2017 output curbs |