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Higher tanker rates and widened heavy-crude discounts alter global delivered crude economics (a supply/demand transport cost effect); this should improve US refiners' feedstock cost competitiveness versus Asian refiners while worsening margins for sellers/export-dependent refiners, depending on duration and crude grade exposure.
What happened, with direct paths to the underlying reporting
Reuters reports that the Iran conflict has pushed tanker freight rates sharply higher, prompting deeper discounts on heavy crude and creating a cost advantage for US Gulf Coast refiners versus Asian competitors.
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