Oil ends up on Wall Street, but pulls back on U.S. crude builds

By Barani Krishnan NEW YORK (Reuters) - Oil markets closed up as much as 2 percent on Tuesday, before giving back most of their gains in post-settlement trade after data suggesting a huge build in U.S. crude stockpiles already at record high levels. The American Petroleum Institute, an industry group, said domestic crude inventories rose by 9.9 million barrels last week, way above a 3.6 million barrels increase expected by analysts in a Reuters poll. Crude prices rose in eight of the last 13 ses