A gunsmith outside Austin TX introduced me to STP and I was astonished how well it worked. I again ran into the use of STP through our B1SU gunsmiths and shooting teams. I used it for years, bare handed albeit, until I began to suffer some of those affects associated with petroleum distillates. I believe it was and is a great lubricant which is great for die maintenance as well if skin contact protection is utilized. I have used Dillon case lube for the past 20 yrs and find the lanolin to be just as good and safe to the body. In the day nothing beat a lube pad and a dab of STP