Should I oil new cable housings? When installing new cables and housing, is is wise to oil the housing?

If so, how? Here Hicks recommends spraying (but for re-newing  old cables). On the other hand, I have found it intuitive to put a drop of oil onto the entrance of the housing, then thread the cable through it.

My rationale is that oil reduces friction, and cables and housings enjoy lack of friction.

So does oiling new housing help, or is it reserved for servicing old housing systems?
I would suggest leaving new cable housings as they are. From my experience with riding MTB bikes in different conditions, lubing them only attracts more dust. I suggest regular cleaning and using oil only for short term reviving. These cables need to be replaced once in a while anyway.