A motorist holds a fuel pump at a Gulf petrol station in London April 18, 2006. Oil prices nudged higher in tepid Asian trading on Thursday, supported by a weaker dollar and optimism that crude producers would abide by an agreement to curb output to prop up markets. But gains were capped by an unexpected rise in U.S. crude inventories last week and as Libya said it expected to boost output over the next few months. Brent LCOc1 futures for February delivery climbed 18 cents to $54.64 a barrel as of 0423 GMT, having previously finished 89 cents lower. U.S. West Texas Intermediate crude CLc1 rose 15 cents to $52.64 a barrel, after closing the previous session down 81 cents. The dollar index .DXY, which tracks the greenback against a basket of six rival currencies, slipped as investors took profits after its rise to a 14-year peak of 103.65 […]