Heard on the Street · Energy · IN04

China Could Cool Diesel. A U.S. Export Ban Would Not. That Is Valero’s Trim Signal, Not Yet

U.S. diesel has been soaring with refiners near capacity. China has the spare stills. A White House export ban is the idea that would trim Valero (VLO) — and it still has not been published.

By Sean Anees Saifi · Capital Wealth · Published Thursday, October 1, 2026 · Source: The Wall Street Journal, Thursday, October 1, 2026 edition, whose market figures are the Wednesday, September 30 close (Heard on the Street)

Key Points

U.S. refineries are running at around 97% utilization while Chinese refineries sit at 75% of max output, Heard on the Street reports, citing Vortexa. China is currently the only country with significant excess capacity.
At last week’s Washington summit, President Trump asked Chinese leader Xi Jinping to boost exports of refined oil products. U.S. diesel prices have hit all-time highs in recent weeks.
His other idea — a ban on American diesel exports — is deeply unpopular with U.S. oil-industry executives. U.S. diesel exports generated $25 billion in the 90 days between June 13 and Sept. 11, per S&P Global Energy.
S&P Global Energy analysis: being cut off from export markets would likely collapse refinery margins and lead to a 12% cut to refinery runs, tightening gasoline as well and leaving drivers paying more at the pump.
China’s diesel exports in September reached around 500,000 barrels a day, up from 166,000 a day on average from April through July (Vortexa). Chinese diesel export margins hit $100.58 a barrel in September, Argus Media’s Tom Reed said, up from $21.40 in January.

97%

U.S. refinery utilization — running hot (Vortexa)

75%

Chinese refinery utilization — the spare stills

$25B

U.S. diesel-export revenue, June 13–Sept. 11 (S&P Global)

12%

cut to U.S. refinery runs if exports were banned, S&P says

A refinery at dusk, flare stacks against a pale sky, no logos. — U.S. stills are nearly full. China’s are not. The export-ban idea is the trim signal — and it still isn’t a published order.

In one line: China has the spare refining capacity to cool diesel; a U.S. export ban would not — and until that ban is published, Valero stays at the weight it was added.

The price of diesel in the U.S. has been soaring, Heard on the Street writes, with American refineries running near capacity. China is sitting on the spare stills. U.S. plants are at around 97% utilization; Chinese plants are at 75% of max output, per Vortexa. At last week’s summit in Washington, the Journal reports, President Trump asked Xi Jinping to boost exports of refined oil products. Five weeks from the midterms, diesel has hit all-time highs.

The other idea on the table is a ban on American diesel exports. Oil-industry executives hate it, and the arithmetic is why. U.S. diesel exports generated $25 billion in the 90 days from June 13 to Sept. 11, S&P Global Energy estimates. Pulling that supply from Latin America and Europe would be a disaster for those customers. At home it could backfire: S&P Global says a ban would likely collapse refinery margins and cut runs by 12%, tightening gasoline too, so drivers could pay more at the pump, not less.

China already opened the tap. Don’t count on a 2022 rerun

Beijing banned refined-fuel exports early in the war, then told refiners they could resume in July. September diesel exports ran around 500,000 barrels a day, up from 166,000 a day from April through July. Export margins hit $100.58 a barrel in September, Argus Media’s Tom Reed told the paper, up from $21.40 in January. That is not 2022. That year extra quotas had China exporting around 680,000 barrels a day by November, and prices cooled. Heard’s read: Beijing’s priority now is domestic supply, tanker freight from the Middle East is expensive, and even unused quotas — maybe an extra 100,000 barrels a day in the fourth quarter — probably wouldn’t remove the threat of a U.S. ban. Global diesel exports in August were 4.6 million barrels a day, down from 5.1 million a year earlier, the IEA says.

Our read

Investments/Risk (IN04): Valero Energy (VLO) was added Monday, Sept. 28, at 1.5% across the tactical and energy-theme books. Its trim signal is a published White House restriction on diesel exports — the policy, not the price. Heard on the Street just named the idea, and named why the industry is fighting it. An idea in a column is not a published order. Nothing has been ordered. The position stays.

The planning point is the pump, not the politics. Freight and diesel land in what a household actually buys. A spending plan that treats crude’s slide to $90.42 (Wednesday’s desk close) as the end of fuel inflation is reading the wrong number. Energy stays the hedge — Exxon Mobil (XOM), Chevron (CVX), ConocoPhillips (COP), Cheniere Energy (LNG), Valero — at weight, not chased, not dumped on a rumor of a ban that has not been written down.

What It Means For Your Portfolio

Watch — VLO stays; the trim is a published export ban, not a column

Heard on the Street just walked through the diesel-export-ban idea that would trim Valero — and it is still an idea, not a published order.

General planning principles, not advice for anyone in particular. A hedge you trade on a rumor isn’t a hedge. The desk’s rule is specific: Valero is held at the Sept. 28 weight until a White House restriction on diesel exports is published. A column that names the idea is the reason to watch, not the reason to sell.

For the household, treat diesel as a budget line, not a headline. Freight and fuel show up in groceries and heating even when crude is sliding. If a travel year or a contractor’s bid is coming, price it off diesel, not off WTI.

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