Oil used for boots
I've had my pair of Danner boots for 5 years, going on six. I do everything in them, hiking, welding, motorcycle riding, only taking them off to go to sleep, so they get alot of abuse. I use Mink oil on mine, heating them up a little from the inside then applying the oil. Of course I clean them off first with a damp rag and a little bit of soap if needed. I've had my Danners re-soled once so far and had a few seams re-sewn. Who knows how long they'll last. They have a little crack where they get toe creased but other than that they're great.