Fleet Equipment & Maintenance Blog

A working guide to FMCSA compliance for Tulsa fleets: the 396.17 annual inspection and Appendix A, DVIRs and pre-trips, what records to keep and for how long, Part 393 brake, lighting, tire and coupling rules, CVSA out-of-service basics, Roadcheck and Brake Safety Week, and how it all feeds your CSA score.

How modern diesel aftertreatment actually works: the EPA 2007 and 2010 milestones, what the DOC, DPF, SCR, and EGR each do, passive vs. active vs. parked regens, DEF facts that matter, the fault families and derate logic, why tampering is illegal, and a maintenance schedule that keeps the system out of derate.

What gets fixed on-site, what has to go to a bay, how a 24/7 emergency call works, what to have ready when you phone, and how to stay safe on the shoulder of I-44, US-75, or the turnpikes while you wait.

Hard start, white or black smoke, loss of power, derate, crankcase pressure, coolant loss: what each diesel symptom usually means, how it gets diagnosed, when a mobile mechanic is the right call, and the Tulsa-specific problems that show up every season.

A working guide to Class 8 semi truck service in Tulsa: preventive maintenance intervals by system, the failures that actually sideline trucks, what a mobile mechanic can fix roadside, and the questions to ask before you hire one.

Every Ford Powerstroke generation fails in its own predictable ways. Here is what goes wrong on the 7.3L, 6.0L, 6.4L, and 6.7L, how each problem is diagnosed and repaired correctly, and the maintenance discipline that keeps a Powerstroke work truck out of the shop.