U.S.-Iran Tensions Push Oil Prices Higher as Diesel Margins Hit Records

Declarations by Iran and the U.S. earlier this week make the prospect of peace in the Middle East even more distant, driving crude oil prices higher. Meanwhile, the diesel crack spread in the U.S. topped $100 per barrel for the first time in history.

At the time of writing, Brent crude was trading at $91.33 per barrel, with West Texas Intermediate at $85.08 per barrel, after Iran said it would adopt a “fully offensive” strategy in the war with the United States, as negotiations have consistently failed to achieve an end to the hostilities.…

Refining & Products Context

Downstream margins — or crack spreads — have experienced considerable volatility as refinery operators navigate feedstock cost fluctuations, product demand seasonality, and evolving fuel specifications. Gasoline and distillate margins serve as key profitability levers for integrated refiners.

Refinery utilization rates, particularly in the U.S. Gulf Coast and Northwest European hubs, directly influence product availability and pricing. Unplanned outages, scheduled turnarounds, and weather-related disruptions are recurring factors that tighten regional product supply.

What to Watch

Key metrics to watch include refinery utilization rates, weekly distillate inventory builds or draws, and crack spread movements, which serve as real-time indicators of refining profitability across major processing hubs.