* Global investors watch Fed April 26-27 policy meeting
* Saudi concerned over economic impact from high price
* Coming up: API oil inventory data, 4:30 p.m. EDT Tuesday
(Recasts, updates prices and market activity)
By Robert Gibbons
NEW YORK, April 26 (Reuters) - Brent crude edged up in volatile trading while U.S. crude ended little changed on Tuesday as investors eyed a U.S. Federal Reserve two-day policy meeting for any signal of a change in monetary policy.
The U.S. dollar remained under pressure on expectations that the Fed will keep monetary policy accommodative, helping support dollar-denominated oil prices that have benefited by attracting investment as a hedge against inflation.
Traders also weighed comments by the chief of Saudi Arabia's state-run firm Aramco, who voiced concern about the impact of high oil prices on the global economy that pressured crude early Tuesday. [
]The Saudi view contrasted with U.S. Treasury Secretary Timothy Geithner's remarks that oil, "at current levels, on its own, it won't put the recovery at risk." [
]A power outage that affected operations at several refiners in the Texas City region near Houston lifted U.S. gasoline <RBc1> and heating oil <HOc1> futures and helped keep crude futures supported. [
]Brent crude for June <LCOc1> gained 48 cents to settle at $124.14 a barrel, having bounced off a $122.78 low.
U.S. crude <CLc1> for June fell 7 cents settle at $112.21.
Tuesday's trading saw U.S. crude seesaw between a $111.12 low and a $112.64 peak. It reached $113.48 on Monday, its highest intraday price since September 2008, before ending the day down 1 penny.
Libya's civil war and violence-tinged unrest Syria and Yemen helped limit bearish sentiment or a price slide, keeping the potential for supply disruption in the region highlighted. [
] [ ] [ ]Tensions between Bahrain and Tehran escalated as Bahrain ordered the expulsion of an Iranian diplomat for alleged links to a spy ring in Kuwait. [
]Oil's rallies have been fueled recently by geopolitical supply worries and expectations the dollar will stay under pressure, but price pull backs have resulted from increasing concerns about the threat to oil demand from high prices. <^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ For a 24-hour technical outlook on oil: http://r.reuters.com/nut29r For a 24-hour technical outlook on Brent: http://r.reuters.com/qut29r For stories on Libya & Middle East crisis: [
] For a TAKE-A-LOOK on Middle East, N Africa:[ ] For top stories on the global economy: [ ] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^Analysts and brokers said investors would be cautious awaiting the result of the Fed's Federal Open Market Committee meeting that started on Tuesday and will include a news conference on Wednesday.
"This week, it will be all about the Fed meeting. Volume and volatility will come back after the meeting," said Olivier Jakob of Petromatrix in Switzerland.
Both U.S. crude and Brent trading volumes outpaced Monday's depressed totals, but they remained on pace to continue to lag 30- and 250-day averages, according to Reuters data.
DOLLAR UNDER PRESSURE
The euro jumped to a 16-month high against the dollar, with no respite in sight for the greenback as long as the Fed continues to lag other major central banks in raising interest rates. [
]The dollar index <.DXY>, measuring the greenback against a basket of currencies, weakened.
"Exchange rates and lack of confidence in the currency have been supportive to oil. The market is going to be cautious and wait to see if the Fed and (Chairman) Bernanke address rising energy prices and inflation," said Phil Flynn, analyst at PFGBest Research in Chicago.
U.S. OIL INVENTORIES
Oil investors also awaited weekly oil inventory reports expected to show crude stocks rose last week. A Reuters poll on Tuesday expected gasoline stocks to be lower, posting what would be a 10th consecutive weekly decline. [
]The forecast was for distillates to be up, only 100,000 barrels, with refinery capacity utilization also rising.
U.S. retail gasoline demand fell last week by 0.7 percent from the previous week, but rebounded modestly versus the same year-ago period, a MasterCard Advisors' SpendingPulse report showed. [
]Industry group the American Petroleum Institute (API) will issue its weekly inventory data at 4:30 p.m. EDT (2030 GMT) on Tuesday, with the government's report issued by the U.S. Energy Information Administration following on Wednesday at 10:30 a.m. EDT (1430 GMT). (Additional reporting by Gene Ramos in New York, Ikuko Kurahone in London and Manash Goswami and Florence Tan in Singapore; Editing by Marguerita Choy)