* Rising U.S. crude, fuel stockpiles weigh
* Euro pares losses, but euro-zone worry persists
* Dollar's rise sparks further commodities selling
(Updates market activity, prices, changes by-line and dateline, previous LONDON)
By Gene Ramos
NEW YORK, May 5 (Reuters) - Oil slumped more than 3 percent on Wednesday, extending losses for the second straight day, as the dollar rose on safe-haven investment flows on worries the Greek debt crisis could spread to other euro-zone countries.
Adding pressure, U.S. government data showed domestic crude and gasoline stocks increased last week, much more than forecasts.
On the New York Mercantile Exchange, crude for June delivery <CLc1> was down $2.90, or 3.5 percent, at $79.84 a barrel by 2 p.m. EDT (1800 GMT). It earlier fell to a low of $79.15, exactly $8, or 9 percent, below Monday's 19-month high of $87.15.
"Crude futures are off their lows, but still pressured as the dollar is still up a lot...and that's what's moving crude futures today," said Tom Knight, trader at Truman Arnold, in Texarkana, Texas.
In London, June Brent crude <LCOc1> traded on the Intercontinental Exchange was down $3, or 3.5 percent, at $82.67 a barrel. <^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ For graphics on dollar/oil correlation, click http://graphics.thomsonreuters.com/gfx/JLeff_20100505130935.jpg http://graphics.thomsonreuters.com/gfx/JLeff_20100505131145.jpg For a technical chart, click: http://graphics.thomsonreuters.com/gfx/WT_20100505084256.jpg ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^>
Rising concerns that Greece's debt crisis could spill into other euro zone countries and derail the global recovery have seen investors become risk averse, buying the dollar and selling oil and equities. The euro fell below the key $1.29 level for the first time in more than a year. [
] [ ]A stronger dollar reduces demand for greenback-denominated commodities, and oil futures shed more than 40 percent of the gains made from the start of February to Monday's peak.
"The volatility is extreme, I haven't seen anything like this in a long time," one London-based trader said. "It's all about the slump in the euro today. All commodities are getting absolutely hammered."
U.S. crude oil stocks rose by 2.8 million barrels last week, the U.S. Energy Information Administration (EIA) said, broadly confirming an industry report the previous day. A Reuters poll had predicted a 1.1 million barrel gain. [
]Gasoline stocks were up by 1.2 million barrels, dwarfing the forecast for just a 200,000 barrel increase. Distillate stocks, which include diesel, jet fuel and heating oil, rose by 600,000 barrels, well below the forecast for a 1.7 million barrel build.
Crude oil stored at the Cushing, Oklahoma, delivery hub for NYMEX-traded oil hit a record high, climbing by 1.6 million barrels to 36.2 million barrels.
Oil spill workers raced against time in the Gulf of Mexico, hoping to take advantage of another day of calm seas in their fight to contain a huge spreading oil slick before it hits the U.S. shoreline. [
]One of the three leaks from the ruptured Gulf of Mexico undersea well owned by BP <BP.L> has been capped, but oil is still flowing out at a rate of 5,000 barrels (210,000 gallons) per day, the National Oceanic and Atmospheric Administration (NOAA) said on Wednesday.
Crude oil prices have not been seriously affected by the oil spill after a deadly April 20 rig explosion triggered a breach in BP's well. (Additional reporting by Robert Gibbons in New York, David Sheppard in London, and Judy Hua in Singapore; editing by Marguerita Choy)