2018 — 2023
3.8L Cummins ISF3.8s5154 - 115kW
Diesel
During your drive, gently accelerate while in a higher gear to check for any shudder or hesitation, as the fuel delivery systems in these Cummins units can sometimes require calibration or filter attention if not regularly serviced.
When maneuvering at slow speeds, listen closely for any unusual clunking or play in the steering linkage, as heavy-duty front ends like the Aumark's can experience bushing wear over time.
Inspect the dashboard display while the engine is running; ensure the Diesel Particulate Filter (DPF) warning lights clear properly, as frequent stop-start city driving can occasionally lead to incomplete regeneration cycles.
Before moving off, check the transmission shifting pattern; ensure the gear changes are relatively smooth, as firm or jerky shifting can sometimes point towards worn clutch components or synchro wear in high-mileage units.
Major service milestone including valve lash adjustment and comprehensive fluid changes across the drivetrain.
Consider a full inspection of the turbocharger health and cooling system hoses to ensure long-term operational reliability.
Routine assessment of suspension component longevity and potential overhaul of the braking system calipers.
Prioritize regular engine oil and filter changes every 10,000 to 15,000km to keep that Cummins engine running happily.
Keep a close eye on the coolant condition; these engines prefer clean, high-quality coolant to prevent internal corrosion.
Regularly drain the water separator on the fuel filter, especially if you have been refueling at different locations across the country.
Ensure the chassis grease points are lubed every service, as this significantly extends the life of the suspension and steering joints.
Monitor the tyre pressures consistently; keeping them at the correct specification helps with handling and prevents uneven wear on these heavier vehicles.
Estimated repair costs if issues arise
If the vehicle has seen a lot of low-speed or idling work, you might eventually need to budget for a professional DPF clean or forced regeneration service to keep emissions systems healthy.
Depending on the car's history and the loads it has been carrying, you might eventually need to budget for a clutch replacement; it's a common maintenance item for commercial trucks of this age.
If this component needs attention in the future due to fuel quality or age, a professional injector clean or partial replacement can ensure the Cummins engine maintains its fuel efficiency.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer