Diesel set the record. Gasoline is just the second punch.

AAA’s national diesel average hit $5.9015 a gallon as of Sept. 7 — the highest print on AAA’s own record table. Regular sat at $4.1505 the same day.

By Victor Lin

Start with the weekly government board, then the live AAA tape. EIA’s Gasoline and Diesel Fuel Update for the week of Aug. 31 had U.S. regular at $4.071 a gallon, down 1.4 cents week over week but up 89.4 cents from a year earlier. On-highway diesel was $5.599, down 5.3 cents from the prior week and up $1.865 from a year ago. California diesel on that same EIA table was $7.218. West Coast diesel was $6.497. Those are not vibes. Those are PADDs.

Then the Labor Day weekend did what crude already promised. Associated Press, citing AAA and GasBuddy, had the national diesel average at $5.85 on Sept. 4, a new high after GasBuddy’s Patrick De Haan flagged $5.820 on Sept. 3 as clearing the June 17, 2022 daily mark of $5.819. AAA’s Sept. 7 board is higher still. Regular never broke $4 on a Labor Day before this year, AAA said in its early-September note; it is there now with crude back in the $90s.

What is pushing it is not a mystery barrel count. It is the stack.

First, crude. Fighting between the U.S. and Iran resumed into early September and yanked the Hormuz premium back onto the screen. Zee Business timed Brent at $96.80 and WTI at $92.14 by 2354 GMT on Sept. 7, after a week when Brent gained about 7.8 percent and WTI nearly 10 percent. Economy Middle East had Brent at $97.35 and WTI at $92.50 on the same Monday tape. Before the war, AP had U.S. diesel near $3.76 and regular near $2.98, per AAA. Brent was roughly $70 in that same pre-war baseline in the AP piece. The barrel moved. The middle distillate moved faster.

Second, product — the part traders keep having to relearn. Kpler’s Sumit Ritolia told Euronews the gap between crude and European fuel prices is “increasingly a refining and product-supply problem rather than simply a crude-supply problem.” Euronews also had U.S. refinery utilization around 98 percent in the final week of August, which leaves almost no spare capacity if something else breaks. Neil Atkinson, in a Lloyd’s List Intelligence briefing quoted by Transport Topics, put the refined-product squeeze in one line: prices are high and “the physical stocks of these products are dwindling.” Diesel does freight, farms, and backup power. Households can skip a trip. A refrigerated truck cannot.

Third, the pass-through. Independent Grocers Alliance puts fuel at roughly 15 to 30 percent of total food cost. Michigan State’s David Ortega told AP that early shocks get absorbed in freight contracts and retailer margins, then show up when contracts reprice and surcharges stick — seafood and fresh fruit already ran hotter than the July grocery print in that piece. Amazon’s temporary fuel surcharge, plus UPS, FedEx, and USPS fees earlier in the war, are the same mechanism in a shipping label.

My take: treat diesel as the binding constraint and gasoline as the lagging twin. A $5.90 national diesel average with California past $7 is not a “pump mood.” It is a logistics tax. If Hormuz flows stabilize and distillate stocks rebuild, the crack can ease before crude does. If crude holds the low $90s and product stays tight, regular stays north of $4 and diesel keeps rewriting its AAA high. Do not invent a November number from a Monday print. Watch the next EIA weekly and the Sept. 9 STEO. The pump will tell you before the speech will.

Camille Reid, a colleague, writes: The culture line at the pump is that this is a mood. It isn’t. AAA’s national regular average was $4.15 a gallon as of Sept. 5; diesel was $5.88 that same day. EIA’s on-highway diesel for the week of Aug. 31 was $5.60, up $1.87 from a year earlier. That is a school run, a second shift, and freight that shows up in the grocery cart. Competence means saying the number out loud and governing to it — not treating the pump like optional weather.

Everett Kane, a colleague, writes: Pump pain is real. So is pretending the White House sets the sticker by memo. Diesel hauls food, sand, and steel. When it climbs, the job site and the grocery bill climb with it. Blame the war, the refinery outage, the idle lease, the tax, or the weak dollar — then say which one. A speech does not fill a tank. Policy that stalls supply will show up at the pump whether the press conference likes it or not.

https://capitolandcleats.com/blog/90-wti-hormuz-print-maps-still-fade-2026-09-01

https://capitolandcleats.com/blog/lin-markets-tape-2026-09-02