The reason for this is that the dry sump, DS cars have the check valve already installed that "fixes" the problem. I believe that changing the oil yearly(or whatever mileage is appropriate), driving it regularly, using the correct weight oil and revving the engine high enough to get good oil pressure while driving will help to keep problems away.From what I've read, the auto cars seem to have a higher rate of variator issues.
Yes, there are many cars which never suffered the problem and there are also some very well-maintained cars with ONE OWNER which suffered multiple issues.Is it an absolute certainty that the wet sump cars will have variator issues at some point? Or are there some cars out there that have never had the issue? Sort of a roll of the dice...?
If you run Mobil 1 full synthetic European car formula oil every year or 6k miles then the problem will stay away! My car has been great with no issues 2007 QP5 WS engineIs there a visual inspection method that will confirm if the cam variators have been updated? From all that I have read - there isn't, but I would like confirmation of this....thank you gang.