* Feb Brent reaches $99.20 intraday before expiry
* Brent premium to U.S. crude at 23-month highs of $8
* China's hikes lender reserve rates requirement
* Coming Up: US markets shut for M.L.K. holiday Monday
(Recasts, updates with settlement prices, detail throughout)
By Robert Gibbons
NEW YORK, Jan 14 (Reuters) - Brent crude rose above $99 a barrel on Friday, failing to reach $100 before the front-month contract expired, but helping lift U.S. oil prices despite China's latest move to tighten credit.
The strength of U.S. equities and Brent helped U.S. crude end higher after seesawing and being pressured early by China's move to lift lenders' reserve rate requirements by 50 basis points in its ongoing effort to tame inflation.
ICE Brent futures have traded above U.S. crude since August last year, supported by a combination of dwindling North Sea crude supplies and disruption of oil grades priced off it, traders said.
In London, expiring ICE Brent crude for February <LCG1> settled at $98.68, up 62 cents, the highest close since the Sept. 26, 2008, close at $103.54, and reaching $99.20 intraday, the highest front-month price since Brent hit $100.31 intraday on Oct. 1, 2008.
The week's 5.73 percent rise was best weekly percentage rise for Brent since the week to Dec. 3, 2010.
New front-month March Brent <LCOH1> settled at $98.38, up $1.09, trading as high as $98.75.
U.S. crude oil for February delivery <CLc1> rose 14 cents, or 0.05 percent, to settle at $91.54 a barrel, in choppy trading having bounced off a $90.10 low.
The expiration of February crude options on Friday added to the price volatility. The U.S. February contract expires next Thursday.
U.S. heating oil futures <HOc1> ended at a 27-month peak on cold weather and expectations for improving diesel demand in an improving economy.
U.S. gasoline futures <RBc1> posted a nearly 2 percent gain despite rising consumer worry about high pump prices.
Rising gasoline prices pushed down U.S. consumer sentiment in early January, overshadowing an improved job outlook and passage of temporary federal tax breaks, a Thomson Reuters and the University of Michigan survey released on Friday showed. [
]Stronger-than-expected earnings from JPMorgan Chase & Co lifted the stock market, offsetting lukewarm economic data and helping S&P 500 to its seventh straight week of gains. [
]"Equities and oil seem a bit toppy, and U.S. crude hasn't been able to push to far above $92, but if you get a $100 Brent print then U.S. crude should take off," said Richard Ilczyszyn, senior market strategist at Lind-Waldock in Chicago.
"With gasoline prices this high you may start to see some demand drop and the bigger story may be the China reserve rate hike and its impact on commodities."
A separate report showed December U.S. retail sales rose slightly less than expected, though total 2010 sales reversed two years of contraction with the biggest gain in more than a decade. [
]Early on Friday, U.S. oil and other commodities felt pressure from the China reserve requirement hike.
China's recent tightening policy has prompted worries that Beijing's appetite for buying oil and other commodities could decrease. [
]BRENT/U.S. CRUDE SPREAD WIDENS
The discount for U.S. crude futures' benchmark West Texas Intermediate (WTI) against Brent <CL-LCO1=R> reached fresh 23-month highs over $8 a barrel, the widest discount since February 2009.
February Brent's approaching expiration had analysts expecting it to erode some of the strong differential, as February had been trading at a premium to March. But that was before the March contract's strong performance on Friday, which narrowed the deficit to February to 30 cents.
Trading volumes were robust ahead of Monday's U.S. Martin Luther King Day holiday that will shut open outcry trading for U.S. crude on the New York Mercantile Exchange, though electronic trading for Tuesday trade date will be available. (Additional reporting by Gene Ramos in New York, Zaida Espana in London and Alejandro Barbajosa in Singapore; Editing by Lisa Shumaker)