Diesel Margins Slide as G7 Announces 100 Million Barrel Stocks Release

The G7 said it will release 100 million barrels of crude oil and diesel stocks over the next four months, a move that pressured middle distillate refinery margins and pushed ICE gasoil crack spreads down from about $85 per barrel mid-last week to roughly $70 now, ING said. Analysts caution the release offers only short-term relief and that persistent Middle East tensions continue to threaten supply of refined products.

By AI Newsroom· Reviewed by Pranav, Founder & Editor-in-ChiefPublished 1 minute agoUpdated 1 minute ago0 views

Why It Matters

Crack spreads measure refinery profitability and influence fuel markets and refining economics; a sustained decline could ease diesel prices and impact refinery margins. However, because the G7 release is temporary, underlying supply risks from disruptions in the Persian Gulf mean market tightness may persist.

Key Facts

G7 action: Release of 100 million barrels of crude oil and diesel stocks
Timing: Stock releases to start over the next four months
ICE gasoil crack: Fell to about $70 per barrel from roughly $85 per barrel mid last week (ING)
Source/analyst: Warren Patterson, Head of Commodities Strategy at ING
Maritime incidents: UKMTO reported seven strikes on vessels around the Strait of Hormuz since September 28

The G7's decision to release 100 million barrels of crude oil and diesel into markets has weighed on middle distillate refinery margins that reached record levels last month. ING strategist Warren Patterson said the announcement and the commencement of releases over the coming four months, together with a reduced prospect of a U.S. diesel export ban, drove the ICE gasoil crack down to about $70 per barrel from highs near $85 mid last week.

Crack spreads — the gross margins refineries earn by converting crude to products such as diesel — are closely watched as a proxy for refining profitability. Despite the recent drop, ING and other analysts note margins remain elevated by historical standards because the G7 drawdown only provides temporary relief rather than removing structural tightness in middle distillate markets.

ING highlighted that a lasting easing of market tightness would likely require refined products to flow again from the Persian Gulf. The firm pointed to ongoing regional instability: recent weeks have seen a rise in attacks on commercial vessels in the Persian Gulf, and UK Maritime Trade Operations reported seven strikes near the Strait of Hormuz since September 28.

The combination of the stock release and reduced regulatory risk has softened immediate price pressure, but market participants are watching whether geopolitical disruptions continue to constrain supplies from the Middle East, which would keep refining margins and diesel availability under strain.