Low oil pressure!

NissanTracker

It depends on how you drive the car.... how often, etc... The gasket slowly starts absorbing oil and after so many pressure cycles... it's just a matter of time. The weak points seem to be where the gasket surrounds the bolts.

on my 07 Nismo, I only noticed it after someone pointed it out. I was at 40K miles. It could have started much sooner. This was 2 years ago. DE's have the same issue as well but at later miles(80k+). I believe the HR motors see it sooner... due to the high rev variant... which equates to higher oil pressure.

I was about to replace the entire timing chain cover, which was about 1,800ish alone. It was not until an Infiniti service person on my350z posted the G37 infiniti part number. CZP started carrying them and I am sure they were the "Go To" for them as well.

Anywho... i'm only giving my experience and the OP might not be experiencing this, just i know there was a lot of talk with the VQ35HR's when i was going through it.

My .02 would be get a 1/8NPT T from Homechepo, tie in an oil pressure gauge with a long line where the OE oil sending unit is and see what the actual idle pressure it. If it is low...

If I remember correctly, just pulling the small covers is enough to check. In my picture above, the full timing cover was pulled off. The gallery plate is torqued down from OEM. That gasket blew apart at that left most bolt. When the tech opened that plate up... it was in pieces, separated at each bolt.

I'm sure the pro's can also shine in