2017 — 2022
6.7L Power Stroke V8 Turbo Diesel - XL/XLT/Lariat/King Ranch/Platinum/Limited
Diesel
During your test drive, carefully observe the 10-speed transmission shifting patterns; it is common to consider that these units sometimes require a software re-learn if shifts feel indecisive or hesitant under moderate load.
Before starting the engine, turn the key to the 'on' position and observe the dash lights; check that the glow plug warning light cycles correctly, as issues with the cold-start system can occasionally arise in high-mileage diesel engines.
While parked on a flat surface, listen closely to the engine idle; note that the 6.7L Power Stroke is known for a robust idle, but any metallic ticking could be a prompt to verify the history of the high-pressure fuel pump or related fuel system components.
When inspecting the steering, turn the wheel from lock to lock while stationary; listen for any groan from the power steering pump, as this system works hard on these heavy-duty rigs and it is wise to ensure the fluid is clean.
Usually the time to perform a comprehensive cooling system flush and verify the condition of the secondary cooling circuit.
Consider replacing the serpentine belt and checking tensioner health, as these are exposed to a lot of heat in the engine bay.
A point where you might assess the diesel particulate filter (DPF) differential pressure sensors to ensure the emissions system is breathing as expected.
Keep a close eye on your fuel filter change intervals, as clean fuel is the secret to a long life for the high-pressure fuel system.
Regularly drain the water separator on the fuel system; it is a small task that saves a lot of potential headaches later on.
Ensure your oil changes are using high-quality CK-4 rated diesel engine oil to keep that turbocharger and valvetrain happy.
Check your coolant test strips regularly to ensure the Nitrite levels are within spec to protect your engine block.
Keep the air intake system clean, especially if the vehicle has been used on dusty NZ backroads or construction sites.
Estimated repair costs if issues arise
If the vehicle has seen a lot of stop-start city driving, you might eventually need to budget for a professional DPF clean or replacement to maintain efficiency and power.
Given the sheer weight of these trucks, it is common to consider that the front-end suspension components, like bushings and ball joints, may require renewal to keep the steering feeling tight as the odometer climbs.
While the 10-speed transmissions are generally durable, performing a fluid and filter change is a great bit of Future Budget Planning to ensure smooth shifting for years to come.
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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