Moscow extended limits on diesel exports by producers and resellers, and on jet fuel. Gulf diesel shipments are at about half of last year's pace, and a possible U.S. export ban is already showing up in the price of U.S. crude.
The diesel market lost another potential source of relief on Wednesday.
Russia extended its ban on diesel exports by fuel producers through Oct. 31. A separate ban on resellers that don't produce fuel runs through Jan. 31, 2027, and jet fuel exports are barred through Nov. 30.
Heating oil futures, the U.S. benchmark for diesel and other distillates, rose about 4.5% on the day. Brent and West Texas Intermediate crude each gained a little more than 2%.
Two suppliers held back
The extension arrives while the Middle East's supply of refined fuel is still well short of normal. Gulf crude exports are back above their 2025 average, but shipments of diesel and similar products are running at only about half their 2025 levels.
With Russia withholding product on one side and Gulf shipments still depressed on the other, importers, particularly in Europe, have fewer places to buy.
The U.S. question
Washington has not decided whether to restrict U.S. diesel exports, but the possibility is already in prices. On Wednesday, WTI near $91.40 sat about $7 below December Brent near $98.40, a wider gap than normal, and analysts tie part of it to the ban talk. The logic runs through refiners: with export markets closed, they would likely trim runs, and fewer runs mean less demand for domestic crude.
U.S. distillate stockpiles rose by about 1.4 million barrels in the week through Sept. 25.
Two outcomes
If Washington restricts exports, domestic diesel supply would rise while the rest of the world loses a third major source at the same time as Russia's ban and reduced Gulf shipments. That would likely widen the gap between U.S. and international fuel prices. If it doesn't, the extra discount on U.S. crude tied to a possible ban has room to close.
What to watch
A U.S. decision on diesel exports is the next catalyst. Russia's producer ban comes up for renewal again at the end of October. Weekly distillate inventories and the pace of Gulf fuel shipments will show whether supply is loosening before winter demand arrives.