(Corrects size of Greece rescue package to $145 billion, instead of $145 million, removes extra word in fourth paragraph)
* Oil spill trims U.S. offshore natural gas supply
* U.S. consumer spending rises in March
* COMING UP: API inventory data released on Tuesday (Recasts, updates prices, changes byline, moves dateline from previous London)
By Robert Gibbons
NEW YORK, May 3 (Reuters) - Oil prices rose to a 19-month high on Monday as economic optimism buoyed Wall Street and on concerns that an oil spill off the U.S. Gulf Coast could interrupt short-term supply.
U.S. crude futures prices pushed above $87 a barrel following a lift in U.S. stocks after a government report that showed U.S. consumer spending increased as expected in March. Separately, The Institute for Supply Management said that the U.S. manufacturing sector grew in April at the fastest pace in almost six years. [
]The reports came after details of the 110-billion-euro ($145 million) rescue package for Greece helped European shares turn positive.
U.S. crude <CLc1> was up 56 cents at $86.71 a barrel at 1:50 p.m. EDT (1750 GMT). That was below the intraday high of $87.15, which just eclipsed the previous 2010 peak of $87.09 struck on April 6 and was the highest front-month crude price since $89.82 traded on Oct. 9, 2008.
Brent crude <LCOc1> rose $1.86 to $89.30 and traded as high as $89.58, also the highest since October 2008.
Brent's unusual premium to U.S. crude partly reflects high inventories at the Cushing, Oklahoma, hub that is the delivery point for the U.S. crude oil benchmark, analysts said. Brent has traded above U.S. crude only about 10 percent of the time in the last 20 years. <CL-LCO1=R>
Stronger demand in India, China and other Asian economies was also cited as a factor lifting Brent above U.S. crude.
"One factor supporting oil prices is the oil spill in the U.S. and concerns about oil supply in the U.S.," said Carsten Fritsch, analyst at Commerzbank.
On Saturday, the U.S. government said two offshore natural gas production platforms in the Gulf of Mexico were shut as a safety precaution, the first sign that the oil slick was affecting the region's energy production.
But shipping operations at the Louisiana Offshore Oil Port were normal despite the massive oil spill offshore, a spokeswoman for the port said on Monday.
Energy giant BP Plc <BP.L>, its reputation battered by the oil spill threatening the U.S. Gulf Coast, said on Monday it was working to stop the leak and promised to pay cleanup and compensation claims.
One factor that analysts said might limit demand growth in oil and other economically sensitive commodities was China's move on Sunday to raise the proportion of deposits that lenders must keep in reserve at the central bank, another step in a campaign to curb inflation. [
] (1 euro=$1.32) (Additional reporting by Alex Lawler in London and Fayen Wong in Perth; Editing by Alden Bentley)