Edit: 2/29/2016
Did some routine maintenance today. To get some of the fluids that were left over in the engine out. I changed the oil after the first few drives and it came out creamy brown. It was sitting for who knows how long so this was my second oil change within a hundred miles or so and it looks a lot better this time around. Coolant was looking a little brown as well so I flushed that out as well and put in some fresh coolant in.
There's a couple different OEM oil filters you can get for the RB series.. 15208-53J0A is what you will find when you look up what filter to use. 15208-55Y0A is what I prefer to run since the filter is twice the size.
I also replaced the fuel filter to a 16400-N7605-JP which is for the 300zx, 280zx ect.