A surprise jump in U.S. crude stockpiles knocked oil off its intraday high, countering optimism around OPEC+'s potential delay to an output hike. Futures in New York were up 1.8% before government data showed an unexpected 4.28 million-barrel build in inventories last week. It clawed back most gains before taking a leg down again. There was a bright spot: Petroleum product demand rose to its highest since March, driven partly by rising jet fuel consumption.