Asian refiners are on course to nearly double their purchases of US crude for September loading, a sharp pivot that threatens to tighten domestic fuel supplies and keep American gasoline prices elevated amid the ongoing Strait of Hormuz blockade.
Trade estimates from tracking firms Kpler, Vortexa and Sperta Commodities show more than 40 million barrels of US crude heading to Asia for September, up from 22 million barrels in August, according to Bloomberg. The surge reflects the desperate search for alternative supplies after months of disruption to the Persian Gulf, the world most critical energy artery.
The Hormuz closure has cut off the usual flow of approximately 13 million barrels per day of crude through the strait, forcing Asian buyers to scramble for non-Middle East sources. WTI Midland crude has become the preferred replacement, with spot premiums surging to $16.70 per barrel above Dubai crude swaps, compared to just $6.20 in January, according to S&P Global Platts.
Record Shift in Global Trade Flows
South Korea, Asia largest US crude customer, purchased 136 million barrels from American producers in 2025, while Japan imports of WTI Midland surged 26-fold year on year in recent months. Taiwan and Thailand have also ramped up purchases, with Thai arrivals of US light sweet crude rising 31 percent in the first ten months of 2025, according to customs data.
The shift carries diplomatic weight as well as economic logic. Japan, South Korea and Thailand all signed bilateral trade agreements with Washington that included energy purchase commitments. The US-Japan deal included $550 billion in investment spanning energy infrastructure, LNG, and critical minerals.
US Domestic Supply at Risk
The Asian buying spree comes at a delicate moment for American consumers. The national average for regular gasoline has climbed to approximately $4.14 per gallon, well above the year-ago level. US refinery utilization rates are already elevated, and diverting crude exports to Asia could further strain domestic fuel production.
Goldman Sachs analysts estimated that US shale producers could gain $5 billion in additional revenue in a single month from elevated WTI prices driven by the Hormuz crisis, according to SK Innovation chief research analyst Choi Joon-young. Higher export incentives may eventually boost Atlantic Basin output, partially offsetting Middle East supply losses.
The IEA August Oil Market Report projected global oil demand would decline by 1.6 million barrels per day in 2026, with 8.3 million barrels per day of Gulf output still shut in. Global oil inventories have fallen by 410 million barrels since the war began, and the agency warned that previously available inventory buffers are rapidly depleting.
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