Brent crude has fallen sharply in the past week, but diesel in Europe has not followed it down. The split between the two markets is now one of the clearest signals in the energy complex: crude is cheaper, yet the fuel that powers trucks, farms and heating systems remains scarce and expensive.

Brent recorded its worst week since the start of the Covid period, falling 13.3 percent, with 8.7 percent of that drop coming on Wednesday alone, according to Reuters figures cited in the Sunday briefing. The benchmark settled at 98.32 dollars a barrel on Friday 6 November, after trading far higher only days earlier.

Diesel told a different story. The December over June gasoil spread, which shows what buyers pay to secure diesel now rather than next summer, still stood at 202.75 dollars a tonne, down from 231.50 dollars but still above the 200 dollar line that traders treat as the level where pressure starts to ease. In other words, the market has priced in cheaper crude, but not cheaper diesel.

The physical crude market is no longer short. The premium of dated Brent over futures fell from 16.56 dollars to 1.35 dollars during the week, and Asian crude imports are running near pre-war levels. That makes the diesel gap harder to explain by crude supply alone. The bottleneck sits further down the chain, in refining and in the delivery of finished fuel.

One promised source of relief has not arrived. Almost a month after Donald Trump announced a diesel deal with Vladimir Putin on 9 October, no Russian diesel has been confirmed discharged in the United States. Al Jazeera reported on 7 November that no Russian diesel had reached the US under the deal, and tanker tracking shows four cargoes loaded in October with zero confirmed US discharges.

The tanker Talisman, which loaded at Primorsk and declared the US East Coast, was signalling for orders near Algeria by 5 November. Another vessel, the Leruo, switched its signal from the US Atlantic coast to Brazil. A third, the Agioi Fanendes, loaded about 40,000 tonnes of ultra-low-sulphur diesel on 22 October and swapped New York for orders while still crossing the Atlantic.

The problem is legal as much as logistical. The US Treasury issued General License 135, which runs until 7 April 2027 and covers the importation of Russian diesel. But the licence does not repeal the 2022 Ending Importation of Russian Oil Act, and banks, insurers, ports and customs intermediaries have been unwilling to test which rule holds. Kpler analysis cited in the report puts the extra supply needed to ease prices materially at about 400,000 barrels a day, far more than the volumes promised under the deal.

For Europe, the consequence is that diesel cracks, the margin between diesel and crude, remain at record levels, according to Argus figures cited in the report. Diesel has been the tightest part of the oil barrel all year, and the fall in crude has done little to change that. The cost lands on haulage, agriculture, aviation and any business that moves goods by road.

US pump prices underline that the squeeze is not a European problem alone. AAA put the US average diesel price at about 6.23 to 6.27 dollars a gallon in early November, near record levels, even though crude has fallen sharply from its highs.

Traders will now watch for three things. The first is a documented US discharge of Russian diesel, which would show that buyers and their banks are willing to handle the cargoes. The second is winter demand, with heating and transport use rising into the cold months. The third is refinery availability, since maintenance and outages can tighten supply again even when crude is plentiful.

For now, the two halves of the oil market are telling different stories. Crude traders have priced in a quicker end to the conflict in the Middle East. Diesel traders have not. Until refined supply loosens, cheaper Brent will not mean cheaper diesel at the pump or the depot.