Crude oil prices were broadly unchanged in early trading on Tuesday, as firm demand supported and ample supply dragged, but analysts said there were signs that a recent rally was running out of steam. Robust demand in Asia as well as due to the driving season in the United States is being met by near record output, especially from the Organization Of Petroleum Exporting Countries (OPEC), although U.S. production seems to have been peaked, at least temporarily. U.S. crude prices were up 16 cents at $59.88 a barrel.