To claim that the car is 'driven incorrectly' is a nonsense from Porsche, especially when they give no guidance in the handbook or any other documentation as to how it should be driven.
Similarly the idea that an owner may have caused the problem by topping up with incorrect oil is equally nonsensical, unless oil consumption is dramatically high.
This is all secondary to the fact that there is no definitive cause that has been identified - only informed opinion at best. And conveniently these opiinions place the responsibility back on the owner. OPC's have been unable to explain VAL report numbers, largely because they do not have the ability to test things like the AOS.
Finally, the blocked GPF's are the result of something ocurring elsewhere. They don't block themselves. If the cause were known, the likelihood is that it is something that is covered by warranty,
The idea that the GPF's are 'filters', service items (costing £7k+) that are not covered by the extended warranty, is being challenged, not least because they do not appear on any service schedule.
Dave continues his work on this and has saved owners many thousands of pounds. Thank you.