Retail diesel hits record $5.85 a gallon as crude and crack spreads push pump prices up
The national average retail diesel price hit $5.85 a gallon on Friday, an all-time high on AAA's daily measure. A day earlier it was $5.7832, already the highest since military action against Iran started in early March. For anyone running trucks or selling fuel, the cost side just moved again.
The diesel record
$5.85 is the number, and it landed fast. The prior day's mark was itself a post-March peak, so the jump to a record came inside 24 hours.
Two things are pushing it, and neither is on the retail side. Crude is up, and crack spreads, the margin refiners take between crude and finished product, are elevated. When both move together, the wholesale rack cost climbs before a single gallon reaches a store, and retailers either eat the difference or pass it through. Most pass it through.
For haulers this is a straight hit to the cost of a load. For c-store operators with diesel lanes, high pump prices can thin volume even when the per-gallon markup holds, because fleet buyers slow down and top off less. Fuel margins have carried a lot of stores this year. A record retail price does not automatically mean fat margins, and if crude keeps rising faster than the rack passes through, the squeeze shows up on the forecourt first.
OnCue's food win
OnCue was named the No. 1 Best Gas Station for Food in Reviewed's 2026 Readers' Choice Awards, which polled readers after evaluating c-store food programs around the country.
The timing matters more than the trophy. When fuel margins tighten, foodservice is the part of the box that holds up, and it carries a better margin than a gallon of diesel ever will. An Oklahoma chain topping a national readers' poll is a marker of where the money in this business is moving: the store, not the pump. Operators watching diesel eat into fuel economics have a reason to look at what OnCue is doing inside.
What crack spreads mean here
Crack spreads and crude are both being flagged as the drivers behind higher pump prices, per the reporting out this week. That points the pressure at the refining and crude layer, not at retail greed, which is worth knowing when a customer asks why the sign changed.
What to watch
Whether diesel holds above $5.85 or eases back toward the March range depends on crude and on where crack spreads settle. If refiner margins compress, the rack could soften and give retailers room. Watch fleet volume at diesel lanes for the first sign that the record price is changing buying behavior, and watch whether more chains lean harder into food as fuel economics tighten.