Hormuz Is “Fine”? The Oil Math Says Otherwise
Oil flows through Hormuz have rebounded, but tanker attacks, refinery losses, shipping costs and diesel shortages explain why prices remain high.
Donald Trump says “record numbers” of barrels are flowing through the Strait of Hormuz and blames high fuel prices increasingly on Ukraine’s attacks against Russian refineries. He is highlighting a real shift, but declaring Hormuz no longer a problem goes far beyond the evidence.
Kpler data cited by Reuters show Middle Eastern crude exports briefly exceeded pre-war levels of about 18 million barrels per day on several days in late September. Other measures put recent sustained flow through Hormuz around 14.2 million barrels per day, roughly 80% of normal, because some exports bypass the strait.
Both figures can be true. Producers release stored cargo, use pipelines and transfer oil between ships outside the danger zone. A few high-volume days can set records without restoring a stable, low-cost system.
Security remains severe. UKMTO recorded multiple tankers struck by unknown projectiles from late September into October. On October 5, a tanker north of Khasab reported that the IRGC hailed it and ordered it to turn around or risk being targeted. The master complied.
Shipping has adapted at extraordinary cost. Reuters reports tanker rates on some Gulf-to-Asia routes rising from about $30,000 to as much as $1.2 million per day. Insurance, escorts and shuttle transfers add cost even when the same number of barrels eventually reaches buyers.
Trump is also correct that refinery disruption matters. Ukraine claims its strikes have disabled more than half of Russia’s refining capacity, contributing to lower diesel output and Russian fuel shortages. The United States reportedly provided intelligence on routes, timing and target vulnerabilities, while Ukraine selected targets. Washington has not publicly detailed that support.
That creates a policy contradiction: American intelligence helped a campaign now blamed for higher prices. It does not mean Ukraine alone caused the crisis. Iran-war disruption, damaged Gulf infrastructure, Russian export restrictions, refinery maintenance and limited global diesel capacity all contribute.
The G7 decision to release 100 million barrels does not disprove improved crude flows. The official statement emphasizes refined products, especially a front-loaded diesel release, and completing an earlier IEA commitment over four months. Crude supply can recover while refineries and transport remain bottlenecks.
Emergency stocks are meant for precisely this kind of multi-layered disruption. Releasing them signals stress, not necessarily that Hormuz is closed. The danger is using finite reserves to suppress prices without repairing refining capacity or reducing attacks.
The phrase “the math ain’t mathin’” assumes that barrels are interchangeable. They are not. Heavy crude cannot instantly replace diesel, and oil in strategic storage may be far from the refinery or market that needs it. Refinery configuration, sulfur content, shipping time and regional product standards determine whether supply relieves a particular shortage.
Politically, every government has an incentive to simplify. Trump wants to show the US-Iran campaign no longer controls prices. Ukraine wants its refinery strikes viewed as effective military pressure. Europe wants reserve releases to demonstrate action. Iran wants maritime risk to prove leverage. A serious assessment must hold all four propositions at once: crude flows improved, Hormuz remains dangerous, Russian refining losses matter, and the G7 is treating a continuing logistics-and-diesel crisis rather than responding to one single cause.
The timing of the reserve decision also matters. It completes the remaining portion of a 400-million-barrel IEA commitment made in March rather than creating an entirely separate 100-million-barrel promise from nowhere. Officials accelerated and reshaped the release toward diesel as political pressure increased. Headlines calling it “another” full release can therefore overstate the addition.
Markets respond to expectations as well as current barrels. Announcing coordinated stocks can lower prices before fuel reaches buyers, while another tanker attack can reverse the move within minutes. Sustainable relief requires safe navigation, repaired pipelines, available refinery units and predictable export policy. Emergency stocks buy time for those adjustments. They cannot permanently offset simultaneous wars against shipping lanes and processing infrastructure. Governments must also publicly publish replenishment plans or today’s relief becomes tomorrow’s reduced buffer.
What to watch next
Watch sustained seven-day flows rather than one-day records, tanker insurance, diesel inventories and new UKMTO incidents. Hormuz has recovered more than pessimists expected. It remains militarized, expensive and vulnerable—and that is why apparently strong crude numbers coexist with emergency releases and painful fuel prices.