PickupsCummins Ram, Power Stroke Ford, Duramax GM, plus half-ton and midsize diesels.Semi trucksHeavy-duty engines from Cummins, Detroit, PACCAR, Volvo/Mack and Navistar share the same emissions hardware and many of the same symptoms.RV / diesel pushersRear-engine diesel motorhomes, often with Cummins engines, plus Sprinter-based camper vans and onboard generators.School busesLong idling and low-speed routes make DPF care the big issue for diesel school buses.Tractors / agJohn Deere, Kubota and other modern tractors use DPF and often DEF systems, plus all the usual fuel, cooling and cold-start issues.MarineRaw water cooling, impellers and heat exchangers set boat diesels apart.GeneratorsStandby and portable diesel generators: wet stacking, fuel storage, cold starts and cooling.Vans & carsSprinter and other diesel vans, diesel SUVs and TDI cars.
Last reviewed 2026-10-19. General information only: confirm with your service information and a qualified diesel technician.