Oil prices rose above $US68 a barrel in Asia on Monday as a rally fuelled by an improving economic and corporate outlook extended into a third week.
Benchmark crude for September delivery was up 52 US cents to $US68.57 a barrel by late afternoon Singapore time in electronic trading on the New York Mercantile Exchange. On Friday, the contract rose 89 US cents to settle at $US68.05.
Oil has rebounded from $US58.78 a barrel earlier this month as stronger economic results from the US and China boosted investor optimism.
The Dow Jones industrial average has risen about 11 per cent during the last 10 days.
"Oil is completely mirroring equity markets," said Jonathan Kornafel, Asia director for market maker Hudson Capital Energy in Singapore. "There's less risk aversion so more investment in commodities."
Many companies have reported better than expected second quarter company results, bolstering investor sentiment that the worst of a severe global recession is over.
But US gasoline demand so far this summer has remained weak, raising doubts about whether the economy can emerge this year with a strong recovery.
"I think a lot of the green shoots we've seen over the last few month have a lot to do with the government stimulus which are eventually going to run out," Kornafel said.
"The fundamentals should definitely have us lower."
In other Nymex trading, gasoline for August delivery rose 2.01 US cents to $US1.94 a gallon and heating oil gained 1.86 cents to $US1.80. Natural gas for August delivery fell 6.8 US cents to $US3.63 per 1,000 cubic feet.
In London, Brent prices rose 52 US cents to $US70.84 a barrel on the ICE Futures exchange.
