The West Texas Intermediate for October delivery decreased 1.28 U.S. dollars, or 1.5 percent, to settle at 84.45 dollars a barrel on the New York Mercantile Exchange. Brent crude for November delivery lost 1.38 dollars, or 1.5 percent, to settle at 90.62 dollars a barrel on the London ICE Futures Exchange.
Oil prices came under pressure as the U.S. dollar appreciated in anticipation of another big rate hike by the Federal Reserve.
The dollar index, which measures the greenback against six major peers, rose 0.44 percent to 110.2150 in late trading on Tuesday. Historically, the price of oil is inversely related to the price of the U.S. dollar.
Traders also awaited data on U.S. fuel stockpiles as the U.S. Energy Information Administration is set to release its weekly petroleum status report on Wednesday.
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