It seems there is little to no information in the UK on changing the atf fluid in a auto 350z, so I thought I'd share what I have so far and update as I learn more.
According to the USA information atf fluid in the 350z circa 2003-2009 should be changed every 30,000/50,000 miles.
The UK information is very conflicting which says Atf fluid is considered "fluid for life" and should not need changing.
Due to the percentage of Americans driving auto 350's to English I'm far more inclined to listen to the majority.
The general sensus is ONLY Nissan Matic J/D atf should be used by all accounts this is near impossible to get hold of in the UK.
I found a few documents on various sites backing up what I have mentioned
I fully understand that this topic will only interest a very select few but i hope the information may be of some use