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Real work · Diesel service · March 2026

A 2023 Ram 2500 Cummins,
$450 flat, serviced where it was parked.

March 2026. The customer runs a used-car lot, and this 6.7L Cummins needed a proper service, not just oil, the whole diesel checklist. He didn’t want to lose the truck to a dealer service lane for a day, so it never left the lot. One flat number: $450.

The customerA used-car lot, a repeat commercial customer, March 2026
The truck2023 Ram 2500, 6.7L Cummins turbo-diesel
The workFull-synthetic oil service (all twelve quarts), BOTH fuel filters, CCV filter
The tech partForced DPF regeneration with bidirectional scan tooling + codes cleared
The number$450 flat, one number, nothing added at the end
TurnaroundSame visit, on-site, the truck never moved

How it went

  1. 1Full synthetic oil service. The correct heavy-duty spec, all twelve quarts of it.
  2. 2Both fuel filters replaced. The pair protects the high-pressure injection system; skipping one is how injectors die.
  3. 3CCV filter replaced. The interval item most quick-lubes never mention.
  4. 4Forced DPF regen + codes. Soot burned down under scan-tool control, codes read and cleared, truck road-ready the same visit.
Why a business customer counts double. A used-car lot owner knows exactly what this service is worth and what a dealer would charge for it, there’s no talking someone like that into a number. Repeat commercial work is the hardest reference to fake and the easiest to lose, which is exactly why it’s worth listing.
Why this one’s worth reading: modern diesel service is where “just an oil change” stops being simple. A 6.7L Cummins takes twelve quarts of the right oil, runs two fuel filters people forget, has a crankcase-ventilation filter on a service interval, and the emissions system needs real diagnostic tooling, not a parts-store code reader. A forced DPF regen is a scan-tool procedure with the engine managed the whole time. All of it happened in the parking spot where the truck sat.
The honest note: a regen isn’t a magic wand. A filter that’s been neglected long enough needs professional cleaning, and if that’s what your truck needs, I’ll tell you instead of selling you a regen that won’t hold. Straight answers are the whole model. And to be explicit about the thing people ask diesel guys for: DPF and EGR deletes are illegal, and I turn them down, the answer doesn’t change based on what it’s worth. That and the rest of the list is on the trust page. The work I do take is covered by a written 90-day workmanship warranty.

Where this fits

Same work, same city, the pages that go deeper on it:

Diesel service

Run a diesel?

If a pickup earns its keep, service timing matters more, not less. Tell me the year and engine and what it’s due for, flat quote back, on the spot.

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Published with the customer’s agreement. Hand-published by Fares on 2026-08-17, before the record-page consent system existed; the customer, a commercial used-car lot, agreed at the time to being named as a business. Re-published anonymized on 2026-08-30 under the no-names, no-locations rule, which now covers every job and runs narrower than that original agreement. Still owed a recorded grant, ask on the next service.

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