Crude oil prices ahead of the start of U.S. trading on Friday were unmoved by strong GDP figures as market watchers wait for the next shoe to drop. The U.S. Commerce Department reported second-quarter gross domestic product increased 4.1 percent in the second quarter, nearly twice the rate of expansion during the previous term. Results were mixed, however, with wages on the decline. Disposable personal income increased 4.5 percent in the second quarter, compared with a 7 percent increase in the first quarter. Strong GDP figures would normally create a tailwind for the price of crude oil, though Matthew Smith, the director of commodity research at ClipperData, told UPI the devil is in the details of the report. […]