What's the interest rate on this account? amoxicillin clavulanate liver damage The front-month US benchmark crude contract made only a minimal gain July 19 but finished last week at a 16-month high above $108/bbl. The biggest attention-grabber, however, was West Texas Intermediate trading near parity with North Sea Brent for the first time since 2010, down to only a 2¢/bbl spread. By early trading July 22, WTI was at a premium to Brent.