Many have run 40 in VQs, it's also Nissan spec as an option in owners manuals outside of the US.
Originally Posted by mahanddeem
You use 0w40 for your 3.5 VQ?
Originally Posted by tbm5690
The VQs shear down quicker than others with the long timing chains...0W-40 being on the thinner side will shear to a 30 and you can therefore ensure you won't be lower than where you should be at the end of the OCI. I personally run my VQ with 5-6K or 12 month OCIs.