The price board at a Shell station in San Diego's Serra Mesa neighborhood tells a story that's hard to believe. **$9.99 per gallon**. For diesel.

 

The price board at a Shell station in San Diego's Serra Mesa neighborhood tells a story that's hard to believe. **$9.99 per gallon**. For diesel. And according to the station employee, the fuel was still available at that price on Friday .

Here's the thing that makes it even more surreal: **the price can't actually go any higher on most electronic marquees**. The displays are constrained by three digits. So $9.999 isn't just a number. It's the ceiling. The pumps have literally run out of room to show how bad it's gotten .

## This Isn't an Isolated Station

Let me put this in perspective. That $9.99 Shell station is an outlier. But it's an outlier in a state where the average diesel price hit **more than $8 a gallon** on Friday, the highest level ever recorded in California . Statewide diesel averaged about **$7.98 a gallon** on September 11, according to the Energy Information Administration .

And it's not just California. The national average for diesel crossed **$6 a gallon for the first time in history** on Thursday, September 10 . GasBuddy counted **28 states hitting new all-time diesel highs** the same day, including Texas, Florida, Georgia, and Washington . The previous record was $5.82, set in June 2022 after Russia invaded Ukraine .

## The Real Problem Isn't Crude Oil

Here's what makes this crisis different from a typical oil spike. The problem isn't that we're running out of crude. It's that we're running out of **refining capacity** .

Patrick De Haan, head of petroleum analysis at GasBuddy, said it plainly on Bloomberg: **"The problem is not crude oil supply, it's refining capacity."** Producing more crude alone won't fix the shortfall because refiners are already running near their maximum .

The numbers behind the squeeze are brutal:

- **About 9% of the world's refining capacity** has been knocked offline by the Iran and Ukraine wars 

- **U.S. refiners are running at about 98% of their operable limit** 

- **U.S. distillate inventories** are about **14% below the five-year seasonal average**, and the EIA projects diesel stocks dipping below 100 million barrels this month—the lowest since 2003 

The U.S. has 130 operable refineries with 18.16 million barrels a day of capacity, down from 18.42 million a year earlier. The country lost LyondellBasell's Houston plant and Phillips 66's Los Angeles refinery in recent years. Utilization has run between 95% and 98% for months—the longest such stretch since 2000 .

## The Human Cost: "Every Truck, Every Delivery, Every Package"

Diesel isn't just another fuel. It's the lifeblood of the economy. Trucks, trains, ships, heavy equipment, farm machinery—they all run on diesel. And when diesel gets this expensive, everything that moves gets more expensive.

Patrick De Haan put it bluntly on X: **"Every truck, every delivery, every package, every grocery run just got more expensive. The cost of moving everything in America just hit a record"** .

The pain is already hitting small businesses hard.

Vlad Kandybovich owns QShark Moving in California. His monthly fuel bill for his diesel-powered fleet hit **$16,000 in August**, compared to about $8,200 a year ago. He's only been able to pass about **17%** of that increase on to customers—raising fuel fees to $60 or $70—because competition in the moving industry is too fierce to charge more .

Jose Pedoya runs a tree-trimming company in San Diego. Filling up his truck and wood chipper now costs about **$150 a day**, plus the gasoline for his other equipment, including ten chainsaws. His profits have dropped noticeably, and he's raising prices for new customers .

## The California Factor: A State Built for High Fuel Prices

California isn't just experiencing the national diesel crisis. It's amplifying it.

The state has **lost about 30% of its refining capacity** over the past five years as plants closed or converted to renewable fuel production. It relies more than other states on diesel imports from Asia, and its unique fuel specifications make it harder for refineries outside the state to supply it .

The result is that California diesel has gone from trading at a **6.8-cent premium** over the national benchmark in early 2025 to a **35-cent premium** now . The state's diesel prices have always been higher. But the gap has widened dramatically.

## What Comes Next

The near-term path depends on three things: whether Middle East supply recovers, whether global refining runs climb, and whether U.S. plants can squeeze out more barrels without breaking down .

The EIA's latest outlook has diesel cracks staying above $2 a gallon through November before easing through mid-2027. Until inventories rebuild, **every barrel in tank is priced as if it were the last one**—and the inflation that leaks into freight, food, and core goods will keep arriving on a schedule the Fed does not control .

Trump has justified the high prices as a necessary cost of preventing Iran from obtaining a nuclear weapon. He's told voters that oil will go down "as soon as we win the war" . But with the war now in its seventh month and no end in sight, the pumps in California are already maxed out. The only question is what happens when the next station hits the ceiling.