2014 — 2019
3.0L V6 EcoDiesel (EXF)
Diesel
Check the coolant reservoir level before starting, then drive up a steep grade and monitor the engine temp gauge closely. Sniff for a sweet, burning smell in the cabin when stationary.
Drive at 80-100 km/h on an open road; look for any 'DPF Regeneration in Progress' messages, check engine lights, or a sluggish throttle response that doesn't clear after a few minutes.
Listen carefully for any deep, rhythmic metallic knocking or tapping sounds from the bottom of the engine block during warm start-up and under light acceleration.
Cycle the factory air suspension (if fitted) through all ride heights (Entry/Exit, Normal, Off-Road 1 & 2) and listen for a noisy compressor or slow adjustment times.
Perform a comprehensive oil and filter change using only MS-11106 / MS-12991 approved low-SAPS oil. Replace both fuel filters (primary and secondary) to protect the sensitive high-pressure common rail fuel pump.
Service the ZF 8HP70 8-speed automatic transmission (oil and pan/filter unit replacement). Inspect the serpentine belt, tensioner, and check the EGR valve for excessive soot buildup and clean if necessary.
Perform a major cooling system flush, inspect the EGR cooler for micro-cracks, test the DPF soot load level, and replace the front/rear differential fluids along with the transfer case fluid.
Strictly use correct specification oil (Mopar/Shell Rotella T6/Mobil 1 ESP meeting FCA MS-12991 or MS-11106 specifications) to prevent premature main bearing wear.
Replace the dual fuel filters every 15,000 to 20,000 km without fail; NZ diesel can vary in quality and common-rail injection pumps demand ultra-clean fuel.
Perform a 30-minute highway run at least once every two weeks to allow the DPF to complete a full passive regeneration cycle.
Regularly monitor the coolant expansion tank level; any unexplained loss of coolant is an immediate warning of an internal EGR cooler leak.
Inspect the front suspension upper and lower ball joints and sway bar links annually, as these heavy trucks wear through steering components quickly on winding NZ roads.
Estimated repair costs if issues arise
Essential if a slow coolant leak is detected. Failing to replace this can destroy the engine or cause an engine bay fire.
Required if the DPF is completely soot-blocked or the SCR catalyst fails. Cleaning can sometimes work, but replacement is highly expensive in NZ.
The absolute worst-case scenario for the EXF EcoDiesel. Often requires importing a fully remanufactured crate engine from the US.
The pan contains an integrated filter. Must be serviced by a specialist who knows how to fill and level the fluid at the correct temperature.
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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