Diesel Pushes Further Above $6 Per Gallon as Iran War Squeezes Supply

US diesel prices continue to climb further above the $6 per gallon mark, with the national average now sitting well into record territory as Middle East supply disruptions bleed into the physical fuel market. The move is already starting to filter through freight, agriculture, and consumer goods pricing.

Where diesel prices stand

Diesel surpassed its all-time high in early September, and has continued surging further above the $6-per-gallon mark amid supply constraints caused by the Iran war and other global pressures. The nationwide average reached $6.31 on Wednesday, per AAA data, and certain parts of California are seeing the fuel close in or surpass $10 per gallon.

The EIA put the national average at $6.285 a gallon on September 14, compared with $3.739 a gallon in the corresponding week a year earlier, an increase of $2.55 per gallon, or 68 percent.

What is driving the move

Prices climbed as the cost of crude oil, the main ingredient in refined fuel like diesel and gasoline, soared amid supply chain disruptions across the Middle East, notably with most tanker traffic bottlenecked in the key Strait of Hormuz.

Ukrainian drone attacks have damaged Russian refineries on several occasions, while Moscow has restricted fuel exports to protect its domestic market, with Reuters estimating that disruptions in Russia and the Gulf have removed roughly 1.6 million barrels per day of diesel exports from the global market since February.

The International Energy Agency reported Friday that Saudi oil production fell to a three-decade low last month.

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The pass-through to the economy

Diesel powers much of the freight and delivery network and is widely used in farm equipment, allowing higher fuel costs to move from the pump into groceries, packages and other goods. Some businesses have already added fees to cover higher transportation costs.

Rising diesel prices could have broad inflationary consequences, according to Adam Turnquist, chief technical strategist for LPL Financial. Higher fuel costs can increase agricultural production expenses, place upward pressure on freight rates and transportation costs, and raise heating bills.

Analysts see more upside from here. Patrick De Haan, head of petroleum analysis at GasBuddy, said the US average diesel price has hit $6.301/gal while gasoline is up to $4.355/gal. He expects both to jump noticeably over the next 48 hours, with diesel potentially hitting $6.60/gal in a few days, surpassing the inflation-adjusted peak seen in 2022.

Options market and stocks to watch

Freight and logistics names carry direct exposure to diesel input costs. Watch FDX and UPS for margin commentary, along with trucking names like ODFL and JBHT, where fuel surcharges can only offset so much.

On the beneficiary side, watch US refiners with strong distillate cracks, including VLO, MPC, and PSX. Integrated majors XOM and CVX also stand to see tailwinds if crude and product prices stay elevated.

For broader macro read-through, keep an eye on grocery and staples exposure at WMT and KR, where diesel-driven supply chain costs can compress margins. More coverage is available on the Unusual Whales news feed.

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