18.10.2011 - Index changes weigh on oil

West Texas Intermediate, once the unassailable global crude-oil benchmark, is under siege on a new front. For months, many producers, traders and investors have considered the rival European Brent blend a better barometer of global demand. They cited a glut of oil in the U.S. as distorting prices of the West Texas blend traded on the New York Mercantile Exchange in New York..............................................Full Article: Source

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