Asian refiners are increasingly turning away from U.S. crude oil as freight costs to transport it to Asia have reached unprecedented levels. With rates surpassing $82 million for a single supertanker, the economic viability of importing U.S. oil has vanished, prompting refiners to seek alternatives. The surge in shipping fees has effectively closed the arbitrage window that once made U.S. crude an attractive option for Asian markets. This shift is driven by a combination of high freight costs and a shortage of vessels, with many ships stuck in inefficient trades around the Strait of Hormuz.