* Front-month US crude fell, nearby months rose
* Brent/US crude spread narrows as US April crude rises
* Middle East, North Africa turmoil keeps oil supported
* China bank reserves rate hike could curb oil demand
* Coming up: Weekend meeting of G20 financial leaders
(Recasts and updates with settlement prices, market activity)
By Robert Gibbons
NEW YORK, Feb 18 (Reuters) - Oil prices slipped on Friday in volatile pre-holiday trading, as front-months relinquished early gains made on news Egypt will allow Iran to send navy ships through the Suez Canal and intensifying unrest in the region.
U.S. front-month March crude contract expires next Tuesday after Monday's U.S. Presidents Day holiday and, along with thinned pre-holiday trading volume, the proximity of the contract expiration was blamed for some of the volatility.
"People are taking pre-weekend profits, after prices moved all over the place. The news that Egypt is allowing passage of the Iranian warships helped NYMEX crude to the upside, but there (were) no other strong headlines after that," said Tom Knight, trader at Truman Arnold in Texarkana, Texas.
U.S. crude for March delivery <CLc1> fell 16 cents to settle at $86.20 a barrel, off an $87.70 intraday peak. March crude did manage a 62-cent gain for the week.
In contrast, U.S. April crude <CLc2> rose 87 cents, or 0.98 percent, to settle at $89.71 a barrel after jumping to a $90.96 peak. Other nearby months also posted substantial gains.
ICE Brent crude for April delivery <LCOc1> fell 7 cents to settle at $102.52, but rose 1.07 percent for the week, a fourth straight weekly rise. Wednesday's Brent intraday peak of $104.52 was the highest since September 2008.
The gap between U.S. and Brent crude prices also seesawed in the volatility. While U.S. front-month March crude and Brent April contracts closed slightly lower, the U.S. April contract posted a nearly 1 percent gain, narrowing the premium of its Brent counterpart <CL-LCO1=R> after that spread hit a record $16.51 the previous session.
Egypt granted permission to Iran to send navy ships through the Suez Canal sent both U.S. and Brent crude higher after prices already were being lifted by clashes between protesters and government supporters in Libya, Bahrain and Yemen.
(Graphics on Middle East: http://r.reuters.com/nym77r)
The Middle east turmoil helped oil recover from early weakness caused by China's bank reserve requirement increase that revived concerns about curbed oil demand growth. [
]"They have been trying to curb liquidity for some time, so little surprise and not as bad as a benchmark rate rise, but still slightly weighing on sentiment," said Andrey Kryuchenkov from VTB Capital.
A weak dollar index <.DXY> offered some support for oil prices. A weak dollar usually lifts dollar-denominated oil prices because it lowers the cost to consumers using other currencies and also the value of currency paid to producers. (Additional reporting by Gene Ramos in New York, Zaida Espana and Ikuko Kurahone in London and Jennifer Tan in Singapore; Editing by Marguerita Choy)