I use Amsoil. You're good changing at the Nissan recommended intervals (every 6000 km according to my owner's manual). However, I changed it more frequently initially: after break-in (2000 km), and when I installed an oil cooler. Now I'm on regular intervals.
Anyhow, this thread shouldn't even exist. There are numerous other threads on this forum about oil change intervals and what oils to use...these discussions have been done ad nauseum. I highly doubt anyone can bring news breaking info regarding esther oils, synthetic oils, etc unless there's been some huge breakthrough discovery made in the last few months. Please, if anyone has any further questions about the subject matter, do a search before posting!
Posting (etiquette) and you