Originally Posted by ZKindaGuy

This might be someting that we should all keep in the back of our mind to see if a pattern arises when using SYNTHS instead of Ester oil. We might find that if SYNTHS run the engine around the 240 range most of the time then this may have been the motivation behind Nissan recommending in their spec to use Ester oil. And if that is the case then:

1. Nissan definitely knew the oil issue existed.
2. Nissan recognized the issue to be significant enough to make the Ester oil use recommendation.
3. Nissan is covered in having provided a solution (the use of Ester oil) to the issue and thus mitigating any "negligence" issues that an owner might raise if their engine died as a direct root cause to the oil issue and they did not elect to use Ester oil as recommended by Nissan.
4. Nissan avoids a recall since they have provided a workable solution........
5. Nissan saves money by not having to do a recall.....and shifts the onus of paying for the solution to the customer....and Nissan makes money be recommending their own Ester oil as a solution.

Interesting....