20AUG

Diesel crack and Hormuz premium stack

3 min read

16:36UTC

US ultra-low-sulphur diesel jumped near $154 a barrel on 8-10 July as Russian loadings collapsed to 234 kbd, a crack answering to lost supply, not war risk.

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Key takeaway

Diesel is dear because Russia stopped exporting it, a shortage set to outlast the oil war-scare.

US ultra-low-sulphur diesel jumped to about $154/bbl on 8-10 July, a roughly $80/bbl crack over WTI, according to a single trade wire ¹. The crack, a refiner's margin from turning a barrel of crude into diesel, had already blown out in Europe, where it held near $46 in early July after Novak's full Russian export ban .

Russian barrels, not war risk, drove the fresh leg. Diesel and gasoil loadings ran just 234 kbd for 1-10 July, against a 400 kbd June pace and an ~817 kbd 2025 average, before the formal 31 July ban even bit ². The loadings data shows a supply loss already happening on the water, which the ban simply formalises.

That separation is the whole trade. The crack premium prices lost Russian supply; the flat-price premium prices Hormuz transit fear. They rest on different clocks and add to each other rather than substituting, which is why the crack held firm through a week the flat price round-tripped. EU Regulation 833/2014 bars the discounted Russian and Iranian barrels from reaching the European pool, so a hedge that assumes the crack and the Hormuz premium deflate together will slip when only one of them fades.

Deep Analysis

In plain English

Diesel is a fuel refined from crude oil, used mainly in trucks, ships and heavy machinery. The 'crack' is the extra price refiners can charge for diesel above the cost of the crude oil that goes into making it, a rough measure of how tight diesel supply is. In early July, US diesel prices jumped to about $154 a barrel, roughly $80 more than the cost of the crude used to make it, a very wide gap. At the same time, Russia's diesel and fuel-oil shipments dropped sharply, to about a third of last year's average pace, even before a formal Russian export ban (announced by deputy prime minister Alexander Novak) takes effect on 31 July.

Deep Analysis

Root Causes

The diesel crack's outsized widening traces to a supply mechanism distinct from the Hormuz risk driving crude: Russian diesel and gasoil loadings fell to 234 kbd for 1-10 July, down from a 400 kbd June pace and roughly 817 kbd across 2025, even before Novak's formal 31 July export ban takes effect, meaning buyers are already losing Russian barrels ahead of the legal deadline.

The European pool has no substitute source, since Regulation 833/2014 already excludes Russian and Iranian diesel from the bloc, so any further loss of Russian volume has nowhere else to draw from within Europe.

What could happen next?

Consequence
The diesel premium is stacking on top of, rather than substituting for, the Hormuz-driven crude risk premium, meaning European and US diesel buyers face two separate cost pressures simultaneously.
Risk
If Russian loadings do not recover once Novak's ban formally binds on 31 July, the diesel crack could widen further from its already elevated 8-10 July level.

Source Landscape

This story draws on neutral-leaning sources

Primary parallel: The stacking of a flat-price war premium with a separate product-specific supply squeeze parallels early 2022, when the Brent risk premium from the Russia-Ukraine invasion ran alongside a distinct European diesel shortage caused by the loss of Russian middle-distillate imports, producing a crack that outran the crude move for months.

Counter-parallel: By contrast, the 2015 US shale glut saw crude and product cracks move together, both falling on the same oversupply signal, offering no precedent for the current decoupling between a rising flat price and an even faster-rising diesel premium.

Immediate impact: the roughly $80/bbl ULSD crack over WTI on 8-10 July directly raises US diesel refining margins, benefiting Gulf Coast refiners with spare distillate capacity while squeezing trucking and shipping fuel costs downstream.

Structural analysis: because the crack is being driven by a Russian export mechanism (Novak's ban) rather than the Hormuz flat-price shock, it is likely to persist independently of how the strait of Hormuz situation resolves; a Hormuz de-escalation would ease Brent and WTI but would not by itself restore Russian diesel loadings, leaving the crack elevated even in a lower flat-price environment.

Consensus view: The European diesel crack has held near $46-60 a barrel through early July even as flat-price crude round-tripped roughly 12% , evidence that the diesel premium is being driven by Russian supply loss rather than the same Hormuz risk moving Brent and WTI together.

Counter-view: Russian officials would point out that Novak's export ban only formally takes effect 31 July, so treating the current 234 kbd loading rate as a settled, permanent supply cut overstates the case; loadings could partially recover in the weeks before the ban binds, unlike the structural EU ban under Regulation 833/2014 that has already excluded Russian barrels from the European pool since 2023.

Key tension: Whether the pre-ban collapse in Russian loadings reflects buyers front-running the 31 July deadline, which would reverse once the ban is fully priced, or a durable logistics breakdown that will deepen once the formal ban binds.

Sources:ts2.tech

Mentions:Russia →West Texas Intermediate →Alexander Novak →Ukraine →EU Regulation 833/2014 →Brent-WTI →

First Reported In

Update #16 · Brent hit $79; the structure said no

ts2.tech· 13 Jul 2026

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Causes and effects

Caused by

Russia's diesel ban sets a record crack

Novak's full Russian diesel export ban is the policy layer behind the collapsing Russian loadings figures.

Occurred 8 Jul 2026

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Diesel cracks hold as crude sells off

The diesel crack that already held near $46 in early July is the base the new $80 print widened from.

Occurred 3 Jul 2026

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This Event

Diesel crack and Hormuz premium stack

A crack driven by lost Russian barrels will not deflate when the Hormuz flat-price premium does.

Led to

Med diesel crack assessed at $91.67

The $91.67 record extends the $80 US diesel crack this desk logged 9 July

Occurred 29 Jul 2026

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Different Perspectives

UK Maritime Trade Operations

UKMTO logged six armed men boarding a tanker 136 nautical miles east of Al Mukalla on 20 August and redirecting it toward Somalia. A vessel steered toward the Somali coast reads as an attempted seizure, a distinct hazard from the stand-off strikes the same lane has seen before.

Mohammad Bagher Ghalibaf

Iran's Majlis speaker received Iraq's Hormuz carve-out request in Baghdad on 19 August, a request that treats passage as Tehran's to grant. Ghalibaf's authority over that grant sits alongside the Revolutionary Guard's separate transit rules, which have moved independently of Iran's foreign ministry before.

Haibat al-Halbousi

Iraq's parliament speaker asked Iran for special consideration on Iraqi Hormuz oil exports during Ghalibaf's 19 August Baghdad visit. Iraq presses the request from a weak position: Iran's central bank is simultaneously demanding Baghdad release Iranian reserves parked in Iraqi accounts.

Federal Department of Economic Affairs, Education and Research

Switzerland's economics ministry updated the Article 21 forms governing lawful Iran money transfers on 19 August, with only the revised forms accepted from 26 August. Bern operates one of the few remaining legal Iran payment channels and has just set a hard cutover on its control point.

Motegi Toshimitsu

Japan's foreign minister said in Muscat on 20 August that Tokyo wants closer coordination with Oman on safe Hormuz and Bab el-Mandeb passage. Japan has no naval presence of its own in the strait, so it is routing the ask through the state negotiating with Iran instead.

Badr bin Hamad Al Busaidi

Oman's foreign minister joined Japan's in Muscat on 20 August to call for intensified coordination on Hormuz and Bab el-Mandeb navigation. Oman also runs the mediation track with Tehran, so the appeal travels through the same channel as the negotiation.