The VQ35DE is a 3.5-liter DOHC 24-valve V6 engine produced by Nissan with sequential multi-point fuel injection. It features an aluminum block and heads with chain-driven dual overhead camshafts (DOHC) and variable valve timing on the intake side. The VQ35DE was introduced in the 2002 Nissan Maxima as a replacement for the previous generation's 3.0-liter VG30E engine.
It is recommended that you use 5W-30 oil in your VQ35DE engine, but other oils such as 10W-30 or 10W40 can also be used without any issues. Make sure to check your owner's manual for specific recommendations on what oil to use in your engine.