Regarding ballistol--yeah, it is a little pricey, but really protects well. I use it on my d2 and 1095 folders... and the rest of my stainless ones occasionally... but, more significantly, I coat my katanas with it--never a sign of rust or decay of any sort. My GEC #42 (1095) did develop a nice patina, but that is because I wipe the blade clean and cut apples, pears, etc... with it. After I'm done a wash the blade with a little dish soap, dry it, and apply the ballisol. The patina stays, lightens a little, but that is it. I like to drip a little in the pivots/ moving parts of my folders as well. Over time some dust will accumulate, but a quick cleaning will get rid of that.