NEW YORK, Aug 1 (Reuters) - U.S. and Brent crude futures turned lower on Monday, giving up earlier sharp gains after a report showed the Institute for Supply Management's U.S. manufacturing index fell to its lowest since July 2009.
The ISM's manufacturing employment index also fell. [ID:nEAPA10DL0]
The dollar index <.DXY> rose as the euro slumped and the dollar rose against the yen. A stronger greenback can pressure dollar-denominated oil prices.
ICE Brent September crude
On the New York Mercantile Exchange, September crude