Smarter Way to Buy Diesel: Fuel Market Intelligence for Trucking Companies

When diesel prices move against you, there’s very little time to react and the cost hits immediately. A price spike that lasts two months can erase a quarter’s worth of margin before a surcharge adjustment or freight rate renegotiation has a chance to catch up. For trucking businesses already running lean, that’s not an abstract risk. It’s one of the most direct threats to profitability the industry faces.

According to the American Transportation Research Institute’s 2025 analysis, non-fuel operating costs hit an all-time high of $1.779 per mile in 2024, meaning fuel price increases now compound against a cost structure already under pressure from every other direction. And yet many fleet operators still buy fuel reactively, relying on surcharge formulas that, according to the Owner-Operator Independent Drivers Association, recover only about one cent for every six-cent increase at the pump. The fleets that manage through volatility rather than absorbing it have something most don’t: a deliberate purchasing strategy backed by real market intelligence.

Tracking the signals needed to buy diesel strategically takes time and expertise most operators don’t have available. That’s exactly the gap a knowledgeable fuel advisor fills. Read on to understand what drives diesel prices, what reactive purchasing actually costs, and how Shipley Energy helps fleets stay ahead of the market.

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Why Are Diesel Prices So Hard to Predict?

Diesel is one of the most volatile commodity-priced products in the U.S. economy. The Energy Information Administration states directly that transportation fuel prices are generally more volatile than prices of other commodities, and the reasons are structural, not incidental.

Crude oil is the starting point, accounting for roughly 50% of the average U.S. retail on-highway diesel price based on EIA data spanning two decades. Any disruption to global supply — an OPEC+ production decision, geopolitical tension in a major producing region, a demand contraction in a large economy — flows through to pump prices within weeks. But crude is only part of the story.

Refinery capacity and margins introduce a second, less visible layer. As older refineries close or convert to renewable fuel production, domestic supply grows more constrained. This allows refinery crack spreads — the margin between crude input costs and wholesale fuel output — to widen independently of crude prices. EIA analysis identifies this as a meaningful factor in the current price environment, where falling crude costs are being partially offset by rising refinery margins. Fleet operators who track crude as a proxy for what they’ll pay at the pump frequently find themselves caught off guard by this gap.

Seasonal demand adds further complexity. Heating oil and diesel are produced in the same refining process, which means fall and winter heating demand competes directly with diesel supply. The EIA explicitly ties diesel price fluctuations to this seasonal cycle. Layer regional supply constraints on top — the West Coast, for example, operates largely isolated from the pipeline networks that supply the rest of the country — and the picture becomes genuinely difficult to read without dedicated attention.

The result is a market that can shift 20 cents per gallon in a matter of weeks on a single geopolitical development or weather event affecting a key refinery region. For fleets operating on margins of 6% or lower, as ATRI documents across most fleet sizes, that’s not background noise. It’s a direct hit to the bottom line.

What Does Reactive Purchasing Actually Cost?

The math on reactive purchasing is straightforward. A 40-truck fleet consuming roughly 600 gallons per truck per month is spending approximately $88,800 monthly on diesel at current price levels. A $0.40-per-gallon price spike sustained over two months adds $19,200 in unplanned costs — with no immediate offset from revenue adjustments or surcharge recovery.

Surcharges help, but they don’t close the gap. The OOIDA’s one-cent-per-six-cent recovery ratio means that same $0.40 move yields roughly $0.07 in surcharge recovery per gallon. The remaining $0.33 per gallon lands directly on the fleet’s cost structure — nearly $16,000 in unrecovered expense across 24,000 gallons over two months, from a single price event.

Fleets with a purchasing strategy in place before that spike don’t carry that exposure. The difference between a fleet that planned and one that didn’t isn’t a rounding error. It’s often the line between a profitable quarter and a break-even one.

Beyond the per-gallon math, unpredictable fuel costs undermine planning more broadly. When fuel budgets are unreliable, so is customer pricing, cash flow forecasting, and capital investment timing. The compounding effect of repeated unplanned cost increases — each individually manageable, collectively corrosive — is what ultimately separates fleets that grow through freight market downturns from those that contract.

What Should Someone Be Watching on Your Behalf?

The fleets that consistently buy diesel more strategically than their competitors aren’t doing more homework themselves. They have someone doing it for them.

Staying ahead of the diesel market means synthesizing several overlapping inputs simultaneously — crude oil trends, refinery utilization and inventory levels, seasonal demand patterns, regional supply constraints, and forward price forecasts that project where the market is likely to move over the next 12 to 24 months. Each signal tells part of the story; none of them is sufficient on its own. And the picture they form together changes week to week.

In a recent article on Propane Contracting, Shipley Energy’s Operations Manager, Derek Shaw, reminds customers that Shipley Energy not only monitors markets, but has it’s own transportation unit, allowing for a unique feed of information about commodity prices along with planning fleet costs and operations.

Most fleet operators are managing drivers, equipment, routes, and customers. Monitoring commodity markets isn’t a realistic addition to that workload. The cost of not doing it, though, shows up clearly in the fuel budget every time the market moves and a fleet without a strategy is caught reacting instead of executing a plan.

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What Purchasing Options Does Market Intelligence Make Possible?

Understanding the market is the prerequisite. Acting on it requires the right purchasing structure. There are four primary tools available to fleet operators, each suited to different market conditions and risk profiles:

Fixed-price contracts lock in a set price per gallon for a defined volume and period. When market signals suggest prices are near a cyclical low and likely to rise, locking in delivers budget certainty and eliminates upside exposure — especially valuable for fleets that can’t readily pass fuel cost increases to customers.

Cap contracts set a price ceiling while preserving the ability to benefit if the per gallon price falls. You pay a premium for the protection, but if the market drops, you pay the lower price per gallon. Caps are well-suited for periods of genuine uncertainty in both directions.

Strategic volume purchasing — buying in larger quantities at advantageous points in the price cycle — provides a lower-complexity alternative when formal contracts aren’t the right fit. The distinction between strategic timing and reactive purchasing comes down entirely to whether market data is informing the decision.

None of these tools delivers its full value without accurate, timely market intelligence behind it. A fixed-price contract entered at the wrong point in a price cycle can cost more than it saves. The tool is only as good as the analysis informing when and how it’s used — which is precisely why the intelligence comes first.

Key Takeaways: Diesel Market Intelligence for Trucking Fleets

• Diesel price spikes hit immediately, while revenue adjustments — surcharge recoveries and freight rate renegotiations — lag significantly behind. That gap is where margin gets lost.
• Non-fuel trucking operating costs hit an all-time high in 2024, meaning fuel price increases compound against an already-pressured cost structure.
• Fuel surcharges recover roughly one cent for every six-cent move at the pump, leaving the majority of price volatility unrecovered.
• Diesel prices are shaped by crude oil markets, refinery capacity and margins, seasonal demand cycles, and regional supply dynamics — forces that interact in ways that require dedicated, ongoing attention to read accurately.
• The right purchasing tool — fixed-price contract, cap, or strategic volume purchase — depends on where the market is and where it’s heading. Market intelligence is what makes that determination possible.
• Fleets that pair deliberate purchasing strategies with real-time market intelligence are better positioned to protect margins through the price volatility cycles that are an inherent feature of the diesel market.

How Shipley Energy Removes the Guesswork from Diesel Procurement

Most fleet managers are running operations, not commodity desks. Tracking crude futures, refinery utilization, distillate inventory trends, regional supply conditions, and forward price forecasts isn’t a realistic addition to an already full workload — and the cost of not doing it shows up in the fuel budget every time the market moves.

That’s where Shipley Energy’s fuel procurement team comes in. We monitor wholesale diesel markets and forward pricing signals on behalf of our clients, translating complex, multi-source market data into clear purchasing recommendations. When signals point toward rising prices, we help you explore locking in before they move. When conditions favor a cap structure over a fixed commitment, we work through that analysis with you. When spot purchasing makes more sense than a contract, we say so.

For trucking companies and fleet operators across the Mid-Atlantic region, working with Shipley Energy means the market monitoring gets done by people who do it every day, and the purchasing decisions that follow are grounded in current intelligence rather than habit. Our role is to watch the market so you can focus on your fleet.

The key question for most fleet operators isn’t which data source to follow or which contract type to consider. It’s whether a deliberate fuel purchasing strategy is in place before the next price move. We help you build one, and we keep it current as market conditions evolve.

If you’d like to discuss your fleet’s fuel costs and what a smarter procurement approach might look like, contact Shipley Energy’s team to schedule a consultation.

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