I noticed there aren't many tutorials on the web on how to change the engine oil for the Nissan 350z, here is how I do it, please follow the instructions diligently as I am not liable for damage or personal injury. I recommend changing your oil once every 6,000 Kms or 4,000 Miles. I use 5 Litres of Mobil Synthetic 5W30 + Fram Oil Filters, OEM one claims to have a relief valve, but Nissan always likes to make you buy their products =), I have no problems with FRAM Oil Filters and I've been using them since day one on all my cars.
Step 1: Warm up your vehicle, dirty oil comes out faster and easier when the oil is hot.
Step 2: Loosen oil filter cap and pull out the oil dip stick, this will also speed up the flowing process. (see step1.jpg)
Step 3: Jack up your car using an appropriate jack and because the 350z is a very low car, its imperative that you use a jackstand and a piece of wood to block one of the wheels so the car doesn't roll off.
Step 4: Remove plastic panel that covers the bottom of the engine. (see step2.jpg) It is held down by screws and plastic clips.
Step 5: Remove the drain bolt and let the oil drain out completely in a oild pan.
Step 6: Install the drain bolt and make sure you use a copper drain plug gasket. (Nissan uses a special copper drain plug that is around 2 mm thick, when you tighten the bolt, the washer thins out. You can get these at your Nissan Parts Counter for about $1 each. Tighten drain bolt at 29.4-39.2 NM or 22-28 FT-LB using a torque wrench.
Step 7: Remove oil filter using oil filter removal tool. (see step3.jpg) You can buy the one from Nissan Part no. KV10115801, its just a simple oil filter wrench that fits perfectly on the oil filter. When installing the new filter, use your fingers and rub some new oil on the filters o-ring. Tighten the oil filter at 14.7-20.5 NM or 11-15 FT-LB.
Step 8 : Wipe off visible oil on the filter and drain bolt area. Re-install plastic cover (see step2.jpg)
Step 9 : Remove Jacks, Wood blocks and Jackstands.
Step 10 : Pour in 4.7 Litres of new engine oil (use a funnel it helps), turn on the car and let it run for a couple minutes. Check for leaks, add additional oil until the oil level is centered (between low and high) on the dipstick.
Hope you enjoyed my tutorial, if you have any questions you can contact me at firstname.lastname@example.org