Brent crude futures dipped 20 cents, 0.3%, to $76.76 a barrel as of 0228 GMT. U.S. West Texas Intermediate crude also dropped 20 cents to $72.63 a barrel.
A sharp plunge in U.S. gasoline inventories due to demand surging to the highest levels since 2021, and optimism surrounding negotiations over the U.S. debt ceiling, helped the main crude benchmarks settle more than $2 higher on Wednesday.
President Joe Biden and top U.S. congressional Republican Kevin McCarthy on Wednesday underscored their determination to reach a deal soon to raise the federal government's $31.4 trillion debt ceiling and avoid an economically catastrophic default.
On Thursday, investors were "awaiting further evidence that a deal will happen soon," said Edward Moya, an analyst at OANDA.
"Crude needs a clear signal that the US economy will avoid economic catastrophe or that China's recovery is picking up steam," he said.
Also weighing on prices was the increased probability of an interest rate hike by the U.S. Federal Reserve.
The strength of April economic data in the U.S., in addition to improving optimism about the debt ceiling negotiations and the health of regional banking stocks overnight have strengthened market expectations of a further hike, ANZ Reesearch said in a note on Thursday.
After a months-long standoff, Biden and McCarthy on Tuesday agreed to negotiate directly. A debt agreement needs to be reached and passed by both chambers of Congress before the government runs out of money to pay its bills, which could be as soon as June 1.
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