Diesel Crunch Set to Deepen as Hormuz Product Shipments Lag Crude Recovery
Persian Gulf product exports running at 40% of pre-war volumes, against crude at 80%, have prompted Goldman Sachs to more than double its diesel refining margin forecasts.
Industry officials gathering in early September (2026-09-09) issued a direct warning: the tight global diesel market will tighten further in coming months, keeping fuel prices elevated and threatening central bank inflation targets. NYMEX ULSD heating oil front-month settled at $5.05 per gallon at Friday's (2026-09-19) close, with ICE Brent crude front-month at $103.37 per barrel on the same session.6
Goldman Sachs more than doubled its diesel refining margin forecasts in late August (2026-08-31), citing strikes on refineries across the Middle East. Persian Gulf crude exports have recovered to 70% to 80% of pre-war levels, Goldman analysts said, but product shipments remain at only 40%. Crude can be rerouted to alternative refineries; diesel once unavailable cannot be easily substituted.5
Vortexa data shows the scale of the disruption. Flows through the Strait of Hormuz stood at around 5 million barrels per day as of Monday (2026-08-24), against more than 20 million barrels per day before the conflict began.4
The composition of those returning flows makes the diesel picture worse. Of an estimated 10 million barrels per day of outbound Hormuz traffic, only 1 million barrels per day consists of refined products. The rest is crude, which can find alternative refining destinations.6
European refiners have stretched their coping strategies close to the limit. They have redirected more crude into kerosene production at the expense of diesel, while accelerating imports from America's Gulf and east coasts. That draw has pushed US diesel stocks down 11% in five weeks, according to Economist reporting. Neither adjustment can be maintained at current rates.3
The US imports only around 7% of its oil through Hormuz, limiting direct crude exposure. But the draw on American diesel inventories to plug European deficits connects US prices to the strait's disruption more directly than that import share alone suggests.2
Australia's exposure is sharper. Direct petroleum imports via Hormuz account for around 15% of Australian supply, but the larger vulnerability runs through Asian refining chains: Asian facilities rely on Hormuz-sourced crude for 40% to 70% of feedstock, and Australia depends heavily on the refined products those facilities export. Over half of Australian fuel supply ultimately traces through the strait, while domestic refineries cover only 20% of national demand.2
Crude prices have not fully tracked the product squeeze. ICE Brent fell below $90 per barrel in late August (2026-08-25) after reports the strait had been cleared of mines, according to The Times, before recovering to $103.37 per barrel at Friday's (2026-09-19) close. NYMEX WTI crude front-month settled at $99.53 per barrel on the same day.4
Some traders see the crude rally as overdone. Contrarian signals in both ICE Brent and NYMEX ULSD heating oil point to bearish storage pressure, suggesting that if Hormuz flows continue recovering, crude inventory builds could follow. But that scenario assumes product flows normalize, and Goldman's August (2026-08-31) data shows they are well short of doing so.5
The IEA has described the current situation as the first global energy crisis, warning that tens of millions of people risk losing access to electricity or fuel. Rising prices have already pushed an estimated 75 million people into difficulty affording electricity. Russia's EU gas supply cuts — down more than 80% — have amplified pressure across energy systems, with ICE Endex TTF front-month at €79.54 per MWh at Friday's (2026-09-19) close.1
Product shipments through Hormuz at 40% of pre-war volumes, against crude recovery approaching 80%, is the spread generating the diesel stress. Goldman revised its margin forecasts on that spread. Whether product flows close the gap with crude recovery rates before winter demand builds is the number middle distillate traders are positioned around.5,6