Diesel fuel prices are climbing again, and US trucking operators are scrambling to keep margin from evaporating, according to a 13wham.com report out of Rochester, New York. The headline from the ABC affiliate — As diesel prices soar, trucking companies fight to keep costs at bay — captures an industry at the sharp end of a cost squeeze that has no quick fix.

Diesel sits behind roughly a fifth of every dollar a dry-van trucker spends, give or take a few points depending on lane and equipment. When pump prices jump, the math gets ugly fast. Fuel is the single line item carriers can least pass through, because most shippers have spent the last decade stripping rates to the bone. The 13wham report flags the dynamic but does not name a specific retail diesel figure or percentage move. The story lands at a moment when national average diesel has run well above year-ago levels in recent EIA weekly surveys, a backdrop the Rochester piece implicitly references.

What are carriers actually doing about it?

The short answer: squeezing every other cost they can reach. Carriers large and small are revisiting the same playbook every fuel spike produces:

• Fuel surcharge math. Most contract language ties surcharges to DOE national or regional diesel averages, but the lag between price moves and surcharge resets can run 30 to 60 days. Carriers are renegotiating weekly resets where shippers will agree.
• Idling limits. Auxiliary power units, engine governors and idle-shutdown timers cut parked fuel burn, which can run a gallon an hour on a cold-soaked sleeper.
• Routing and drop-and-hook. Fewer deadhead miles, more drop-and-hook turns and tighter appointment windows all burn less diesel per loaded mile.
• Speed discipline. Holding trucks at 55-58 mph instead of 65 saves roughly 10-15% in fuel on a flat lane.
• Equipment swaps. Owner-operators are parking the oldest, thirstiest units and stretching trade cycles on 2021-2023 tractors with better aerodynamics and newer drivetrains.

None of this is new. Every diesel spike since 2008 has produced the same list. What changes is how much room operators have to absorb it.

Why this round hurts more

Spot rates on the dry-van and reefer sides have spent the better part of two years below the marginal cost of operation for many carriers, per DAT and FreightWaves SONAR data. Fuel pass-through on contract freight typically recovers a chunk but rarely all of it. The Rochester report frames carriers as "fighting" costs — language that fits an industry where bankruptcy desks have been busy and where small fleets can ill afford another 30-cent jump at the pump.

Fuel alone does not explain freight's pain. Insurance premiums are up double digits year on year. Tractor payments are heavier because of the 2022-2023 buying cycle. Driver wages keep grinding higher. Diesel is the variable that moves fastest and loudest, which is why it dominates the headline.

What it means for shippers

Buyers should expect fuel surcharge true-ups on existing contracts and stiffer resistance on any rate reduction request. Carriers that survive this round will not forget who shared the pain and who did not. Spot exposure will likely loosen modestly as marginal operators park trucks, but not enough to flip the market on its own. The bigger question is whether retail diesel holds, climbs, or recedes into the end of the year — a call that hinges on refinery runs, distillate inventories and the broader crude curve, not on any single carrier's P&L.

The 13wham piece reads as a local-business angle on a national story. The national story is straightforward: diesel is up, margins are thin, and the carriers that make it through the next two quarters will be the ones treating fuel like the line item it always was — the one that decides who is still running trucks in 2026.