US oil (WTI) prices have edged up on hopes the planned restart of country's main petrol pipeline after a leak more than a week ago will boost demand, while Brent has slipped amid scepticism over a proposed deal to freeze production.
US oil (WTI) prices have edged up on hopes the planned restart of country's main petrol pipeline after a leak more than a week ago will boost demand, while Brent has slipped amid scepticism over a proposed deal to freeze production.