I have an all Brazilian neck and board on a PRS Modern Eagle that does fine without any special services required. Just watch humidity and wipe off the muck with a proper rag and you're good. If you use some lemon oil on occasion on the fretboard it's also fine.
Many threads and opinions on this subject. Have heard comments from well known builders and luthiers cautioning against too much treatment as it can leach under the frets. I use Fret Dr on rare occasion, but just a little bit on the rag..like a drop or two. Regular mineral oil is probably just as good.
Naptha for gunk. If you simply must oil, do so sparingly, once or twice a year. I find that if I just play my rosewood board guitars, they stay "well hydrated" enough. I've really never needed to oil a rosweood board.