With spot arbitrages open for multiple US crudes like WTI and Mars in Europe and across Asia, US grades are capturing more market share overseas. * Discounted WTI backing Forties out of Asia * Bakken near parity with Murban, Forties * Italy, UK take record US volumes * Mars offers India alternatives to Iran, Saudi US monthly crude oil exports came in at 1.671 million b/d in March, just under record levels hit back in October, US Energy Information Administration oil data showed Friday. US crude exports historically have gone to Canada, but volumes to China have recently begun to rival these as WTI has become increasingly competitive, not just with local and Middle East grades, but also with North Sea Forties, which has seen volumes plummet into both China and South Korea. The US exported 380,000 b/d to China in March, compared to just 341,000 b/d to Canada. […]