Well I can tell you why I asked is I bought a new straight, *** a year ago when I was getting the itch to try one. Never used it but looking under the scope I see pitting in the blade, but no rust or it is just starting that's why I asked. As I would like a way to keep them without worrying.
The razor in question was a cheap one to try yes I know it was cheap.
When I get a new razor, clean it up, usually either hone it or refresh it, and then it get's one and only one application of Tuf-Glide, it binds with the metal, and then proper drying and storing will take care of the rest.
I try to stay away from any organic oils on razors, as they say, "like dissolves like".....
I use motor oil for short term storage, petroleum jelly for long term. Motor oil is specifically formulated to leave a good long lasting film on steel. Ballistol? That may well be better, but I use what I use.
I have not noticed any problem with scales. However, I don't think I have any bone scaled razors, either.
I used to never use oil. I didn't think I needed to, if my razors were put away dry. A few rusty blades showed me the error of my thinking.
i live in a really humid area (armpit) of Texas and i know what it does to my car if left alone. Using oil or Ballistol on a razor may well be overkill given that i only have 3, so they'll all get used at least once a week and they sit indoors rather than on the driveway.
But to me, the entire ritual is part of the enjoyment and so stropping and oiling them after use seems a natural way to look after them and stop any deterioration. Besides, how much effort is involved?
The silicone sleeves are great, but for long term storage I rub a little camellia oil, also called tsubaki oil, on them. I've been using that for carbon knives for a long time, and a small bottle should last a lifetime.