Sweet crude differentials surged on the US Gulf Coast RTuesday on the back of the closed arbitrage from Europe and West Africa and the collapsing Nov/Dec NYMEX spread.Buyers snapped up November barrels at 50-58 cts ovr WTI,sharply stronger than Monday's 43-45 ct ovr range.HLS also strengthened from 17-23 cts over range yesterday to 25-30 cts over today.
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