Why is diesel rising faster than crude oil?

Diesel is experiencing a supply-side crisis independent of crude prices. Ukrainian attacks on Russian refining infrastructure have cut Russian refinery output by 1.6 million barrels per day year-on-year and halved Russian diesel exports. Russia's refineries are optimized for diesel production, so their loss disproportionately constrains global supply. Meanwhile, crude is primarily a raw material—refineries consume it, but end-users don't. With refining capacity under stress globally, diesel and other products command premium prices relative to crude. The crack spread (refining margin) has widened to an unprecedented $90/barrel, meaning refiners are earning historically high profits per barrel processed.

What is the crack spread and why does it matter for logistics costs?

The crack spread measures the profit margin from converting crude oil into refined products like diesel and gasoline. Historically, this spread was relatively stable and predictable. On February 27 (pre-war), the spread was $36.55/barrel. By early August, it exceeded $90/barrel for the first time in history. A wider spread means refiners capture more margin, but end-users (fleets, shippers) pay substantially more at the pump. For a logistics company purchasing thousands of gallons weekly, a $50+/barrel widening in the crack spread translates to significant unbudgeted cost increases.

When will diesel prices stabilize?

The article does not provide a timeline for stabilization. However, the structural drivers suggest sustained pressure: Russian refinery capacity remains offline due to ongoing Ukrainian attacks, and geopolitical tensions between Iran and U.S./Israel could worsen Strait of Hormuz disruption risks. As Jeffrey Currie noted, historical econometric models assuming stable spreads between crude and products no longer apply. Expect elevated diesel prices to persist as long as refining capacity remains constrained—likely months to years. Supply chain teams should plan for sustained high fuel costs rather than a near-term return to pre-war pricing.

How are U.S. refiners responding to the crisis?

U.S. refiners are maximizing utilization rates to capture the historically wide crack spread. This means running refineries at or near full capacity to produce more diesel and other products for the premium-priced market. While this increases domestic supply, it does not solve the global shortage driven by Russian capacity loss. U.S. refiners are effectively bidding crude inventory aggressively to maximize throughput, but total global refining capacity is the binding constraint.

What should logistics companies do about diesel cost pressure?

The article implies several strategic responses: (1) Hedge fuel costs through forward contracts rather than spot purchases, (2) Reassess modal mix and consider shifting volume away from trucking to rail or maritime where feasible, (3) Negotiate fuel surcharge clauses with customers to pass through volatility, (4) Optimize route efficiency and load factors to reduce per-unit fuel consumption, and (5) Monitor geopolitical developments (Iran-Israel tensions, Ukraine-Russia refinery attacks) as leading indicators of future price moves. The disconnect between crude and product prices is structural, not temporary, so tactical responses alone are insufficient.

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Diesel Prices Surge 71% Since Iran War: Supply Chain Crisis

Aug 21, 2026

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/Israel in late February 2024, diesel prices have surged 71% while crude oil has risen only 26%—creating an unprecedented and historically anomalous gap between raw material costs and refined product prices. This disconnect, highlighted by commodity experts like Jeffrey Currie (former Goldman Sachs head of commodities), reflects a structural supply crisis driven by Ukrainian drone attacks on Russian refining infrastructure, which has slashed Russian refinery output to 25-year lows and halved diesel exports. The crack spread—the profit margin from refining crude into products—has widened to over $90 per barrel, nearly double the pre-war baseline, signaling severe constraints in global diesel supply. For supply chain professionals, this development represents a material operational and financial threat.

Diesel represents a major cost component for trucking fleets, last-mile delivery networks, and any enterprise relying on road or maritime transportation. The 71% price surge translates to substantial margin pressure for carriers, rising logistics costs for shippers, and potential service-level degradation if fleets reduce utilization or defer deliveries. S. 55 per gallon—within 15 cents of post-war highs—amplifying pressure on transportation budgets.

Unlike traditional fuel volatility tied to crude price swings, this crisis stems from refining capacity destruction and geopolitical risk that may persist for months or years, making it a strategic rather than tactical pricing event. The broader implication is a structural shift in energy economics: refineries are operating at maximum utilization to capture record margins, but global refining capacity—especially for diesel-optimized Russian facilities—remains offline or severely constrained. Supply chain teams must reassess fuel hedging strategies, negotiate forward contracts, explore modal shifts away from trucking where feasible, and prepare contingency plans for sustained elevated fuel costs. This is not a transient spike; it reflects a new equilibrium in which product prices decouple from crude prices and geopolitical risk premium becomes a permanent line item in logistics planning.

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#logistics-cost-pressure

#iran-conflict

#russian-refineries

#crude-products-spread

#fleet-operations

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strategic

What if diesel prices remain elevated for 12 months due to persistent refining constraints?

Simulate a scenario in which diesel prices remain at or above $5.00/gallon for the next 12 months due to ongoing refining capacity constraints (Russian attacks, geopolitical risk). Model the impact on trucking fleet operating costs, last-mile delivery economics, and inventory carrying costs across a representative logistics network. Assess margin compression and service-level targets under sustained high fuel cost.

Run this scenario

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immediate

What if Iranian supply disruptions spike crude volatility and widen diesel spreads further?

Model a geopolitical escalation scenario in which U.S.-Iran tensions worsen, triggering Strait of Hormuz shipping delays or sanctions that further constrain global crude and product flows. Simulate the impact on fuel cost volatility, crack spread widening (e.g., $100+/barrel), and the compounding effect on logistics costs. Assess whether fuel hedging strategies remain viable under extreme volatility.

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Simulation Suggestion

strategic

What if Russian refinery capacity recovery accelerates, normalizing diesel supply?

Model an optimistic scenario in which Ukrainian attacks on Russian refineries diminish, allowing Russian refinery output to recover toward pre-war levels (5+ million barrels per day). Simulate the impact on global diesel supply, crack spread normalization (back toward $40/barrel), and the resulting fall in diesel prices. Assess the timing, probability, and implications for fleet budgeting and contract negotiations.

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