* Dollar index hits 8-month low, weakness lifts oil
* China manufacturing data boosts oil, copper
* Coming up: U.S. pending home sales, 10 a.m. Monday (Recasts, updates with settlement prices, market activity)
NEW YORK, Oct 1 (Reuters) - Oil prices rose 2 percent on Friday, posting their best percentage weekly gain in nearly 7-1/2 months as the dollar slumped and China posted strong economic data.
Oil investors shrugged off mixed U.S. economic data, including a report showing the pace of growth in the U.S. manufacturing sector slowed in September.
U.S. crude for November <CLc1> delivery rose $1.61 to settle at $81.58 a barrel, just under its intraday peak of $81.66, a seven-week high.
Oil rose 6.65 percent for the week, its best weekly gain since prices rose 7.66 percent in the week to Feb. 19. On Thursday, it closed the third quarter with its largest percentage gain since the last quarter of 2009.
ICE Brent November crude <LCOc1> rose $1.44 to settle at $83.75 a barrel.
"The dollar weakness and the belief there will be more quantitative easing by the Federal Reserve are pushing (crude oil) prices up," said Gene McGillian, analyst at Tradition Energy in Stamford, Connecticut.
U.S. DOLLAR SLUMP
The dollar hit a six-month low versus the euro <EUR=> and the dollar index <.DXY> fell to an eight-month low after the New York Federal Reserve president said U.S. growth has been disappointing and that more action by the Fed will likely be warranted unless the outlook improves. [
] [ ]Gold hit record highs on Friday on the dollar's weakness and expectations of further U.S. monetary easing [
], and copper rallied to its highest level in more than two years on the strong Chinese manufacturing data. [ ]<^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Graphic of price performance of leading commodities:
http://link.reuters.com/hev36p
Graphic showing its performance vs other assets:
http://r.reuters.com/cek95p
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Data showing revived growth in China's manufacturing sector lifted oil prices early on Friday. China's official purchasing managers' index rose to 53.8 in September from 51.7 in August, well above the median forecast of 52.0 in a Reuters poll of economists. [
]Further support came as a strike at France's top oil port that has squeezed supplies to refineries entered a fifth day and spread to other ports, boosting fuel prices across Europe. [
]Wall Street stock indexes rose on gains in resource stocks, but investors showed caution after data showed a slowdown in U.S. manufacturing growth. The Institute for Supply Management said its index of U.S. factory activity fell to 54.4 last month from 56.3 in August. [
]U.S. data was mixed on Friday. Construction spending rose unexpectedly in August, while September consumer sentiment improved slightly but remained at its weakest level in more than a year. [
]"A substantial expansion in risk appetite continues to drive the bulk of the price strength as the complex continues to feed off of a weak dollar and a renewed vigor in the equities that managed to shrug off some negative economic releases today," Jim Ritterbusch, president at Ritterbusch & Associates in Galena, Illinois, wrote in a research note.
In the week to Tuesday, money managers increased net long crude oil positions on the New York Mercantile Exchange, according to data released by the Commodity Futures Trading Commision on Friday. [
] (Additional reporting by Gene Ramos in New York, Marie-Louise Gumuchian in London and Florence Tan in Singapore, editing by Jim Marshall)