Crude oil fell more than 1 percent on Friday, the first decline after three days of gains, as worries over the Greek fiscal crisis, weaker oil products prices and pre-weekend profit taking undercut the market.
Gasoline and diesel's proxy, heating oil, led the oil complex lower, sliding about 3 percent as concerns about their high refining margins over crude prompted those who had been bullish on such products to close out some positions.
Oil prices were little changed after oilfield services firm Baker Hughes reported its weekly rig count fell again last week, extending the decline in exploration to a seventh month.
The number of rigs exploring for oil in the United States fell by 4 last week to a total of 631. This time last year, U.S. drillers had 1,545 oil rigs online.