CNBC | Oil slips 2% amid signs of rising excess supply CNBC Oil contracts were also tracking weak gasoline prices. Gasoline futures lost nearly 1 percent, extending Wednesday's 4-percent tumble, amid worries of peak turnout from U.S. refineries as the autumn maintenance cycle draws to a close. "What we're ... Oil Prices Retreat on Oversupply Oil cuts loss on Wall Street rebound; oversupply still weighs Iranian Oil Goes Back on the Market |