seriously, unless you live in a very salty humid environment, you don't have to do anything.
I never oil any of my naked infi. I have even chopped a bunch of branches/bushes, fire wood, and put it away dirty with sap on it, still no rust.
I got it wet and washed it off once, and left it to air dry on the counter while I was doing something (forgot it there). It got some almost invisible water spots, but no rust at all. No darkening what so ever. Next time I chopped with it, they were gone.
The only exception would be the comp finishes. Then you gotta keep them oiled, or actually hit them lightly with buffer, or sand paper to take that decarb layer off.
Even my stripped infi gets no oiling at all.
That said, I have seen light rust fingerprints on neked infi, in coastal environments (pics only). Some in those types of environments do say they have to keep something on the blade to avoid staining etc.