* Oil falls $5 a barrel to lowest level since early June
* U.S. stocks little changed, pushed by oil and outlooks
* Dollar strengthens on comments by Paulson, Plosser
* Hawkish talk from Federal Reserve official weakens bonds (Recasts throughout with U.S. market focus, adds byline; dateline previous LONDON)
By Herbert Lash
NEW YORK, July 22 (Reuters) - Oil tumbled $5 a barrel on Tuesday, lending support to U.S. equity markets where solid profits from two Dow components barely offset disappointing earnings outlooks from technology bellwethers including Apple <AAPL.O>.
The dollar rallied after a Federal Reserve official suggested U.S. interest rates may need to rise to stem rising inflation and the top U.S. Treasury official once again said a strong currency is in the interest of the United States.
The dollar also was helped after a top official at the International Monetary Fund said the euro is now overvalued, while its decline has brought it closer to its medium-term equilibrium than it has been in a decade. The U.S. Dollar Index <.DXY> was up 0.89 percent at 72.471. Against the yen, the dollar <JPY=> rose 0.75 percent at 107.21.
The euro <EUR=> fell 0.93 percent at $1.5781.
U.S. and euro zone government debt prices fell after Charles Plosser, president of the Philadelphia Federal Reserve Bank, suggested U.S. interest rates could rise sooner rather than later to stem rising inflation.
Weaker oil cushioned a fall in European shares that brought to a halt a four-session winning streak as an outlook from Vodafone <VOD.L><VOD.N> disappointed.
In the United States, the Nasdaq briefly turned positive as the broader U.S. stock market added to gains on crude's slide. The tech-heavy Nasdaq has been struggling with fears of an economic downturn linked to expensive oil.
"You see crude oil down, and I think that's a stimulus to the broad stock market. You also see the dollar up," said Tim Ghriskey, chief investment officer of Solaris Asset Management in Bedford Hills, New York. He added, "A stronger dollar should cap oil prices and continue to push them down."
Oil's renewed fall marked a welcome boost for investors facing disappointing news such as a profit decline that was steeper than expected at credit card company American Express <AXP.N> and poor results at Wachovia Corp <WB.N>
A weak forecast at Texas Instruments <TXN.N> also weighed.
Solid results at Caterpillar <CAT.N> and DuPont <DD.N>, and news that General Electric Co <GE.N> and Abu Dhabi investment agency Mubadala Development Co said they had agreed to an $8 billion joint venture.
GE shares rose nearly 2 percent at $28.21, while Caterpillar shares jumped nearly 3 percent to $75.39 and DuPont's shares rose more than 2 percent to $45.04.
At 1 p.m., U.S. benchmark indexes were mixed. The DowJones industrial average <
> rose 17.02 points, or 0.15 percent, at 11,484.36. The Standard & Poor's 500 Index <.SPX> was down 1.53 points, or 0.12 percent, at 1,258.47. The Nasdaq Composite Index < > fell 6.53 points, or 0.29 percent, at 2,273.00.European indexes were hit by poor U.S. corporate results, but Vodafone was the strongest negative weight on the pan-European FTSEurofirst 300 index <
>, with its shares falling about 14 percent.The world's largest mobile phone operator by revenue cut its outlook for full-year revenue to near the bottom of a previous forecast range as consumers delay buying new phones.
The FTSEurofirst 300 index ended down 0.44 percent at 1,165.04 points, having earlier fallen as much as 2 percent. The index rose about 5 percent in the previous four sessions.
While results from four other large U.S. have managed to calm fears over balance sheets recently, Wachovia spooked investors with its results.
Wachovia shares initially dropped more than 10 percent after it said it would slash its dividend and posted an $8.86 billion second-quarter loss, but rebounded to stand 7 percent higher at $14.06 when it said it did not plan to sell new shares to raise capital.
Wachovia's results "were far, far worse than expected and that seems to have given equities a bit of a knock lower and the yen a bit of a boost," said Adam Cole, global head of FX strategy at RBC Capital Markets.
Crude oil fell to a six-week low as a tropical storm sweeping the Gulf of Mexico was expected to miss most major oil and gas installations.
Oil last week has posted its biggest weekly price decline in history, a fall that chopped $17 dollars off a barrel as dealers focused on mounting U.S. economic troubles and sliding demand.
U.S. light sweet crude oil <CLc1> fell $4.29 percent to $126.75 a barrel, after touching a low of $125.63.
Spot gold prices <XAU=> fell $19.30 to $946.00.
Gold eased as the dollar's recovery and weakening oil prices pulled the precious metal from its earlier highs.
However, losses were limited as investors worried about the outlook for the U.S. economy were still buying the precious metal as a safe haven from financial risk.
"Gold is still reacting to ongoing concern over the economic outlook," said Standard Chartered analyst Daniel Smith. "People continue to be in gold for its safe haven status."
The benchmark 10-year U.S. Treasury note <US10YT=RR> fell 15/32 to yield 4.10 percent. The 30-year U.S. Treasury bond <US30YT=RR> fell 23/32 to yield 4.66 percent.
(Reporting by Ellis Mnyandu, Chris Reese, Wanfeng Zhou in New York and Peter Graff, Alex Lawler, Jan Harvey, Emelia Sithole-Matarise in London and Eva Kuehnen in Frankfurt) (Reporting by Herbert Lash)