dj_efk
A2OC Donor
Thinking about @Olerype ’s observation - and that of others - it is strange that some cars that are seemingly well maintained throughout their lives need this job doing urgently after just topping 100k miles, yet others continue to run fine at twice that mileage and more - although granted they may not run quite as smoothly thanks to the balance shaft timing slipping due to wear of the components in question.
We can never be sure as to the exact cause without a lab, but the only things that would seem to vary that could affect the wear rate of these components (other than varying quality of their construction, but let’s put that aside for now seeing as factory-fit parts are QC’d fairly rigorously), are as follows:
I wonder if any professional technicians would have more insight into possible causes.
We can never be sure as to the exact cause without a lab, but the only things that would seem to vary that could affect the wear rate of these components (other than varying quality of their construction, but let’s put that aside for now seeing as factory-fit parts are QC’d fairly rigorously), are as follows:
- How often the oil is changed (long-life intervals or fixed; and at what mileage etc.)
- The oil quality and grade (although the minimum specification SHOULD be sufficient to protect these components, perhaps some oils that meet the VAG spec are better than others at this?)
- Car usage (I.e. Number of cold starts, is the car mainly used for shorter journeys where one would assume the oil being cold is harder on / accelerates wear to these components).
- Driving style (does the driver allow the engine oil to warm up before exploiting full performance and do they habitually “hold” gears or change up as soon as possible etc.).
I wonder if any professional technicians would have more insight into possible causes.
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