Use a work schedule rather than one average
Break the planned shift into travel, setup, pumping at different duties and idle periods. Identify whether the heater, transfer equipment or other auxiliaries operate during each stage. Use measured fleet records where available, while keeping estimates clearly marked. A single average can hide a package that is economical during standby but inefficient at the duty that occupies most of the campaign. Ask every supplier to apply the same schedule so their estimates answer the same commercial question rather than reflecting different assumptions about equipment utilization.
Set the boundary for the quoted fuel figure
Determine whether the offer covers only the pumping engine or the entire truck, including road travel and an optional heater. For a PTO arrangement, ask how stationary pumping is represented in the road-engine estimate. For separate engines, identify which consumption streams are included. Heating should be reported against a stated thermal duty rather than blended into an unexplained total. The buyer should be able to reconcile the quotation with the actual equipment list and distinguish fuel used to move the vehicle from fuel used to perform the treatment.
Compare delivered work, not engine labels
Request fuel estimates at the specified operating cases together with the useful output at those cases. A lower consumption value is not an advantage if it is achieved by delivering less flow or omitting auxiliaries. Review the basis for part-load operation and any assumptions about ambient conditions. Where a supplier provides only general engine data, ask how that information has been translated to the installed pump package. Record the calculation boundary so the purchasing team does not present an engine benchmark as a verified whole-truck result.
Ask for a transparent measurement proposal
For any agreed demonstration, identify how fuel and elapsed time will be measured and which operating variables will be recorded at the same time. Clarify whether the value is calculated, measured on a similar configuration or measured on the actual supplied truck. These are different levels of evidence and should remain distinguishable in the evaluation. A short test can support a particular duty comparison, but it does not automatically establish an annual cost. Relate the result back to the planned work schedule and the uncertainty in utilization.
Include sensitivity instead of a fixed saving claim
Compare outcomes under realistic changes in annual pumping hours, fuel prices and the proportion of heated work. An option that saves fuel during a frequent duty may have little effect when the truck spends most of its time waiting. Keep maintenance, support vehicles and consumables visible as separate costs rather than claiming that fuel alone describes ownership cost. Select the proposal with a credible, reviewable basis and useful output that meets the job. Unsupported percentage savings should not replace a calculation the buyer can reproduce.
Recalculate the offer for a lower-utilization campaign
Repeat the commercial comparison with fewer annual pumping hours while retaining the same required duty points. This shows whether an efficiency-related purchase premium remains useful when work is intermittent. Keep the assumptions visible and do not present the exercise as a forecast of actual future savings. If one proposal includes an optional heater and another does not, separate that difference before drawing conclusions about fuel performance. A transparent comparison lets the buyer discuss the uncertainty with operations instead of allowing a single attractive consumption value to dominate the order decision.
Put these items side by side in the bid review
| Purchase item | Question to resolve | Evidence to request |
|---|---|---|
| Operating schedule | Hours at each useful output | Shared duty and utilization worksheet |
| Fuel boundary | Road, pump and heater loads | Separate included consumption streams |
| Evidence level | Measured versus estimated | Test conditions and calculation assumptions |
Suggested wording for the quotation request
Provide a fuel estimate for the attached shift schedule, showing road, pumping, standby and heater consumption separately where applicable. Identify useful output, included auxiliaries and evidence type for each case. Explain assumptions and propose a measurement method for the agreed factory demonstration without claiming a universal annual saving.
Keep the decision tied to the complete oilfield flushing truck: pump, drive, clean-fluid supply, pressure-control equipment and the defined site interfaces. A component option should not quietly change the agreed cleanout duty or move essential equipment outside the price. Ask the supplier to identify assumptions, exclusions and deviations in the written offer, then resolve them with the responsible engineering and purchasing teams. Use the approved equipment documentation and site procedures for setup, testing and operation.
For the wider equipment scope, consult the Oilfield Flushing Truck: Price and Cost Guide. Use the RFQ checklist to collect the supporting documents before requesting a configuration-specific quotation.
Buyer questions
Can engine size predict fuel cost for the job?
Not reliably by itself. Installed duty, load, auxiliaries and utilization determine the useful comparison.
Should a supplier’s percentage-saving claim decide the order?
Only a comparison with a stated baseline and equivalent work can support that decision. Ask for the calculation and its assumptions.
Background and supplier contact
Pump application information offers related background, not certification of the equipment in a quotation. Applicability must be checked for the project and destination.
Explore the oilfield flushing truck, browse all technical resources, or visit Vance Petroleum for company information. Send the relevant job inputs when requesting an equipment proposal.