* Oil falls to $107 as investors take profit
* Market awaiting details on U.S. government's rescue plan
(Previous PERTH, updates prices)
LONDON, Sept 23 (Reuters) - Oil dropped $2 a barrel on Tuesday, weighed by doubts about the U.S. bailout plan and as investors booked profits after an historic one-day rise in the previous session.
Although oil surged a day earlier on hopes the plan would support the economy and fuel demand, analysts said doubts lingered over how the package would be paid for. The concern also pressured European ans Asian stocks.
"It started off with a wave of optimism and now perhaps a bit of realism has kicked in," said Christopher Bellew, a broker at Bache Commodities.
"The dollar's weak, but the stock market is weak as well. The implications of that for demand are probably why we're coming back down again."
U.S. crude for November <CLc1> fell $2.13 to $107.24 a barrel by 0814 GMT. Brent crude <LCOc1> for the same month was off $2.29 to $103.75.
The November U.S. crude contract rose nearly $7 on Monday, while the expiring October contract, which traded up to $25 higher, settled up 15.7 percent at $120.92 -- the biggest one-day gain on record.
"I think traders are taking profits after the rally in both October and November contracts last night," said Gerard Rigby, an independent energy consultant based in Sydney.
"There are still a lot of question marks on the bailout plan and the longer it takes to be approved, the more doubts the market will have."
The $700 billion plan to shore up the battered U.S. financial system looked set to drag into next week as Washington lawmakers haggled over how exactly they could make Wall Street pay for its rescue. [
]Oil's gain on Monday was helped by a drop in the dollar, which can boost the appeal of commodities to investors. The U.S. currency was up slightly on Tuesday against a basket of other major currencies.
Since hitting a record high of $147.27 a barrel in July, oil has tumbled on mounting evidence that high energy costs and slowing economic growth were undercutting global fuel demand.
Oil use in the United States, the world's biggest consumer, is running about 4 percent below last year, according to the latest government data.
In a report titled "The world did not run out of crude oil on October expiry", BNP Paribas' Harry Tchilinguirian said the prices reached by the October contract were not sustainable in the current economic context.
But developments such as lower Saudi Arabian supply to oil companies, as reported by Reuters on Monday, unrest in Nigeria and higher-than-expected Chinese imports would support prices, Barclays Capital said in a report. (Reporting by Fayen Wong in Perth and Alex Lawler in London)