Since there isn't a specific section for Nissan Elgrands I've posted here. Hope that's ok.

I'm looking for a resource which would tell me which fluids my vehicle needs from the chassis number. As it's a Japanese import vehicle the info is never on any of the databases the big stores use and it's not easy to find the info online. I use a Nissan parts database site which is great for finding part numbers but it doesn't seem to list the various oils and fluids.

The chassis is APWE50, year 2000. It's. 3.5l 4x4. I'm looking specifically for the transmission oil having lost a bit when changing out my speed sensor.

Thanks.

These sites might have some of the answers you're looking for:
https://www.engine-specs.net/nissan/vq35de.html
https://oilincar.com/nissan/elgrand/e50-1997-2002.php