The industry standard is ten years or 100000 miles.

Today an engineer who designs products that last longer is generally demoted or fired.

Between 60k and 90k is when most fail in hard service, ten years and they should be junk regardless of miles.




Have a great day.

__________________
ASE Master Mechanic

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D

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