Hi all, I was lucky enough to be able to acquire a new Nissan Titan a few days ago. I'm now pondering on what to use for oil in it. For some odd reason the owners manual specifically recommends a mineral based oil (not sure what's up with that) ranging in weights from 5W-30 to 10W-40 depending on expected temperatures. I would like to use the Mobil Delvac 1 5W-40 or Mobil 1 10W-30 in it but am open to suggestions. What do you all think??? I live south of Atlanta so I don't expect too many extremely cold temps. (although I froze my butt off today)!! Also if you all are interested I can do an oil sample on it when I drain the factory fill at 1K miles.