* Concerns over Greek debt woes boost dollar vs euro
* Forecast rise in OPEC exports dampens sentiment
* Coming up: Feb German producer prices
By Jennifer Tan
SINGAPORE, March 19 (Reuters) - Oil fell below $82 a barrel on Friday, extending the previous day's losses, as the U.S. dollar strengthened against the euro amid worries over Greece's debt woes, and a rise in OPEC exports loomed.
The dollar's safe-haven status grew after Greece said it could not achieve the promised deficit cuts if its borrowing costs remained high, raising the stakes in its quest for the European Union to help tackle its debt crisis, and putting the European single currency under pressure.
But Athens dismissed a report it was planning to call in the International Monetary Fund if EU leaders do not agree on a rescue plan next week, calling IMF aid a last resort. [
]U.S. crude for April delivery <CLc1> shed 32 cents to $81.88 a barrel by 0255 GMT, after settling 73 cents down at $82.20 on Thursday. London Brent crude for May <LCOc1> fell 32 cents to $81.16.
Still, oil is on track for a 0.75 percent gain this week, as the bearish pressures are offset by investor expectations of a steady economic recovery, which is helping Asian stock markets close in on a sixth straight week of gains. [
]Adding strain to crude was a report showing seaborne oil exports by OPEC, excluding Angola and Ecuador, will rise by 70,000 barrels per day (bpd) in the four weeks to April 3, according to an analyst at UK consultancy Oil Movements. [
]The rise in sailings comes at the beginning of the second quarter, when demand usually declines for seasonal reasons.
"The dollar is firmer, and that's a factor affecting the oil price, but we've seen this pattern before -- when oil gets above $82 or $83, buyers turn cautious and prices fall back," said David Moore, Commodity Strategist at the Commonwealth Bank of Australia in Sydney.
"The broader macro-economic story remains one of international recovery, but oil fundamentals are not particularly tight at the moment, and for that reason, when the price gets to those levels, we see more caution in the market, though the underlying tone remains positive," he added.
Moore said crude was likely to trade in the range of "high $70s to low $80s" over the next week.
FIRM DOLLAR PRESSURES
The dollar index <.DXY>, which tracks the performance of the greenback against a basket of six major currencies, edged 0.1 percent higher to $80.288 by 0220 GMT. [
]Crude prices tend to fall with a stronger dollar, as investors seek the safer haven of the U.S. currency over that of commodities. A weaker dollar also makes dollar-denominated commodities less expensive for holders of other currencies.
OPEC members had agreed on Wednesday to maintain the official existing cuts of 4.2 million bpd, although some members have been pumping oil above their output targets.
Most estimates suggest production from the Organization of the Petroleum Exporting Countries has been rising since early 2009 as members relax adherence to output cuts announced in December 2008 amidst higher prices.
OPEC's adherence to the promised cutbacks has fallen to below 60 percent, according to Reuters estimates. [
]The group is likely to continue to leave its oil output quotas unchanged at its next meeting in October, Kuwaiti Oil Minister Sheikh Ahmad al-Abdullah al-Sabah told Reuters on Thursday. [
]Over in Europe, Germany will unveil producer prices data for February at 0700 GMT. The index is seen rising 0.1 percent last month, giving an annual rate of minus 2.8 percent, versus minus 3.4 percent in the previous period. (Editing by Ramthan Hussain)