The world’s top trading houses, among the most nimble entities in oil, say even they aren’t sure how to stay a step ahead of a coming cut in shipping fuel sulfur. The new rules come into force in just over two years, and threaten to upend markets from heating fuel to crude oil. But uncertainty around them casts a shadow over how smoothly the transition can go; industry experts say investments in refining, tank storage or vessel upgrades need to happen now in order to be ready in time. “I don’t know if it’s going to provide opportunity or disaster at the moment, to be honest,” Vitol boss Ian Taylor told the Reuters Global Commodity Summit. […]