The Russian diesel deal was supposed to bring pump prices down fast. On Oct. 9, the U.S. Treasury issued General License 135, a temporary permission that lets Russian diesel be sold, shipped and even imported into the United States until April 7, 2027. It came with President Trump’s announcement that Russia would supply 300,000 tons right away and 500,000 more in November, as Trump described it.
Ten days later, the pump hasn’t really noticed. AAA’s national average for diesel was about $6.32 a gallon on Oct. 18, roughly 4.5 cents higher than a week earlier, though still below the $6.53 record set on Sept. 22 (AAA).
The main reason is size. Wood Mackenzie estimated that the announced cargoes are less than 5% of U.S. diesel demand over the next few months, The Hill reported. Energy Secretary Chris Wright has defended the plan, saying fuel prices have been falling in recent weeks. Analysts who spoke to CNBC said the financial gain for Moscow would also be marginal.
But the deal hides a stranger fact.
Russia was short on diesel first
For most of the war, Russia has been one of the world’s big diesel sellers. This summer, it was a buyer.
Ukrainian drone strikes hit Russian refineries, the plants that turn crude oil into fuels like diesel. Enough capacity went offline that Moscow banned its own diesel exports in July and started bringing fuel in by sea. In August, Russia imported 368,000 tons of petroleum products by ship. About 112,000 tons of that, roughly 31%, came from South Korean ports, according to a Guardian analysis of port records and ship-tracking data.
Across July and August, the Guardian counted more than 176,000 tons of fuel, mostly diesel, loaded at Korean ports onto seven tankers that made 14 trips to Russia’s Far East. Three of those tankers are under UK and EU sanctions.
Geography explains part of it. Many of Russia’s biggest refineries sit in the west of the country. Vladivostok sits on the Pacific, a short sail from Korea’s refining ports in Ulsan and Yeosu.
Zero on paper, 176,000 tons on the water
Seoul’s answer was that official trade data show no exports of diesel, gasoline or jet fuel from Korea to Russia through customs from 2025 through August this year, the foreign ministry said. Both things can be true at once.
Every ship files a declared destination, the place its paperwork says it is going. According to the Guardian, the sanctioned tanker Layla listed Niigata, Japan, on one of its two diesel runs from Ulsan, then sailed to Vladivostok. Another sanctioned tanker, the Chongchon, never entered a Korean port at all. It took on about 26,000 tons in a ship-to-ship transfer near Yeosu, listed Singapore as its destination, and also ended up in Vladivostok. Customs data records what the paperwork says. Ship trackers record where the ship actually goes.
None of this appears to break Korean law. Refined fuels such as diesel are not among the 1,402 items on Korea’s Russia export-control list, a point both the Guardian and Seoul made. The ministry said it would look into the claims and tighten checks against workarounds. The timing was awkward: Ukraine’s sanctions envoy said the shipments helped Russia make up for its refinery losses, a claim Seoul called inaccurate, while the two governments were already arguing over the transfer of two North Korean prisoners of war.
Why this matters for the Russian diesel deal
Sanctions are written as lists: banned goods, banned ships, banned buyers. Diesel moved through the gaps between those lists. The fuel wasn’t banned in Korea, some of the ships carrying it were banned elsewhere, and the destination on paper wasn’t the destination on the map. Now Washington’s license moves Russian diesel itself from the banned column to the allowed one, at least until April. (For how one country’s rules can reach other countries’ companies, see secondary sanctions.)
For anyone watching prices, the size of any single cargo matters less than the state of Russia’s refineries. Trump said later supplies would depend on the condition of Russia’s diesel refineries, and those plants are exactly what Ukraine keeps striking. The spread between crude and diesel, explained in our diesel crack spread piece, will tell you more about your fuel bill than the headlines will.
What to watch
- November: whether the promised 500,000 tons actually ship.
- Seoul’s review: what Korea finds about who sold the fuel and where it really went.
- Refinery strikes: any new hits on Russian plants would cut the supply this deal depends on.
My take: Diesel doesn’t carry a passport.
Not advice. Just how I see it.