You can look up maintenance information and schedules on the Nissan Owners site.

Nissan Owners Site

From that page, you can also download a copy of the latest Maintenance Guide in PDF form. It is the one provided with a new car purchase.

Periodic Maintenance Schedules


Schedule 1 calls for more frequent fluid changes and inspections. It is for cars driven in severe conditions or for those who want to take extra special care of their Z. Schedule 2 calls for less frequent maintenance.

 

Schedule 1




NOTE: The oil filter (15208 65F01) and spark plugs (Iridium - DENSO FXE22HR-11) listed there are for 2007-2009 350Zs.
For 2003-2006 350Zs the oil filter is 15208 31U00 or 15208 65F00 and the spark plugs are Platinum - NGK PLFR5A-11.

 

Schedule 2



NOTE: The oil filter (15208 65F01) and spark plugs (Iridium - DENSO FXE22HR-11) listed there are for 2007-2009 350Zs.
For 2003-2006 350Zs the oil filter is 15208 31U00 or 15208 65F00 and the spark plugs are Platinum - NGK PLFR5A-11.

 

Here's links to some DIY threads for common maintenance items.

Drive Belt Replacement

Differential and Transmission Fluids #1

Differential and Transmission Fluids #2

Transmission Flush

Spark Plugs

Brake Pads #1

Brake Pads #2

Tire Rotation