Copied from what I just posted on another thread.
I left a Straight Steel Heart in it's sheath, a High Desert Low ride, in a tool box in the back of my truck, that I was at the time using to haul Travel trailers cross country for about two years with no oil, just to see how it went, the knife got darker, sort of black on the uncoated parts of the handle, that was all.
It now sits in the Safe, having been wiped with either WD-40 or CLP once, maybe 3 or 4 years ago, I pull it out once in a while to throw at trees, no need to oil it again so far.
I have a few Satin Busse knives that I wipe off carefully with a micro-fiber cloth any time they get touched by Human Hands, like the Back and handle of the original Game Warden I pulled out last week while thinking about posting a picture, no oil, just a blue micro fiber cloth.
Every few years I wipe down the Fancy Busse Knives with what ever spray oil is handy at the time then wipe them pretty much dry with the same Micro-Fiber cloth mentioned.
That is all.
Added,
Relax, unless you are in some kind of corrosive environment, just make sure that the finger prints get wiped off and any kind of oil will prolly do just fine.
At least for the INFI knives.
Last week or so week I purchased a Straight Steel Heart that had not been oiled and had sat in its kydex sheath dirty from throwing at a live tree in my old back yard for at least 4 years, I just washed it with some Simple Green and wiped it down with a dry blue micro fiber cloth and then with an slightly oily cloth and it looks just fine, .300", slotted screws, light wear, mostly from killing that tree in my back yard some years ago, rust was a non-issue.
So wipe the finger prints off, wipe lightly with an oiled cloth and just put them away, I do and I have some pretty nice Busse knives.(ok, maybe Lots)