US oil continued to trade above Brent futures on Monday after flipping to a premium for the first time since 2010 in the previous session, while both benchmarks held firmly above $108 a barrel amid hopes of a revival in global demand growth.

A pledge by the Group of 20 nations, which account for 90 per cent of the world economy, to put growth before austerity fuelled hopes of a recovery in consumption of commodities.

US oil got a further boost as refineries in the world's top oil consumer ramped up runs, helping the contract surge ahead the global crude-market benchmark, North Sea Brent.

Brent rose 12 cents to $108.19 a barrel by 0401 GMT, after settling 63 cents lower on Friday. US benchmark West Texas Intermediate (WTI) crude gained 20 cents to $108.25 after hitting a 16-month high of $109.32 in the prior session.

"The US contract will be the main driver of oil with Brent tracking the US contract," said Tetsu Emori, a commodities fund manager at Astmax Investments in Tokyo.

"The United States is using more and more of its own oil, which means less demand for barrels priced in Brent."

The convergence of the two front-month benchmarks comes as increased pipeline capacity has drained the glut of oil at the WTI delivery point of Cushing, Oklahoma, to the US Gulf Coast, where refinery demand has been high. Stocks at Cushing have fallen to 46 million barrels from 52 million in January.

The jump in the US benchmark on Friday was also assisted by hedge funds, who amassed record bets on rising US crude oil prices in the week to July 16, trade data by the US Commodity Futures Trading Commission (CFTC) showed.

Astmax's Emori expects the difference between the two contracts to remain narrow for the rest of the year, with both rising overall in tandem. US crude may command a premium of as much as $3 a barrel over Brent, with the European marker rising by as much over the US contract, he said.

The WTI may rise to $115 by the end of the year, he said. Brent may also gain to the same levels, and rise to about $120-$125 a barrel if geopolitical tensions in the Middle East worsen or there is a supply shock.

Crude prices were also supported by China's move to remove controls on bank lending rates that could lower financial costs for companies, offering hopes that cheaper credit will help support the softening economy and drive demand from the world's No.2 oil consumer. - Reuters