Firearm Lubrication
15 years ago
Someone just brought to my attention this little article.
It's especially disconcerting to me since I've been using CLP since forever, on almost everything. I've never really had any problems with it thickening up like that, but I tend to run light coats. Tried Miltec-1, but didn't really like it that much, since it seems too thin to me. I've used white lithium on the 1919, and it's fine for that, but I had never really though that motor oil would be as good as, even better, than oils designed specifically for firearms.
It's especially disconcerting to me since I've been using CLP since forever, on almost everything. I've never really had any problems with it thickening up like that, but I tend to run light coats. Tried Miltec-1, but didn't really like it that much, since it seems too thin to me. I've used white lithium on the 1919, and it's fine for that, but I had never really though that motor oil would be as good as, even better, than oils designed specifically for firearms.
FA+

For the more conventional guns, though, motor oil does work well. The idea of using just a thin layer of lube to prevent dust from building up doesn't work when the environment is that dirty. Carry a quart of oil and basically wash out the receiver with it between landings.
Haha Nice :P Me and my Neighbor just use Hoppe's 9
Granted, some of the stuff I work it, if something goes wrong you don't have to worry about a live round messing up, or a very nice firearm getting screwed up.
I use motor oil on all of our guns at work and my own, works just fine to. Use grease on my 1919 and the M-53, belt feds like it thick on the feed paw parts.
The main reasons I use ATF are that it is a good rust preventative, it doesn't evaporate off when it is in the rack sitting, it's nice and thin so cold weather isn't a problem (most greases and thicker oils will gum up ARs and 10/22s), and well if it lets the bearing surfaces in a transmission last 100,000 miles (god knows how many revolutions that is) then it is way over-specced for firearms.
I'm going to guess it'll be somewhere around 360,000,000 revolutions. Do I get to keep the car if I'm closest?
If you think about it, the only parts of a rifle that get really hot are the inside of the barrel and the gas system, neither of which is supposed to be dripping with oil. A bit of oil to keep rust at bay is all that should be in either place. All the slidey surfaces never really get above the smoke point of most oils. Even the cam pin on an AR probably only reaches 400F or so after dumping a few mags. Heat is more or less a non-issue. Longevity of the oil film is a lot higher on the priority list, and that goes hand in hand with high boiling points, so any oil that doesn't evaporate in a month will survive plenty high temperature.
I live in Louisiana. It gets really, really humid here. It's a dangerous environment. My AR and a few other guns have good finishes and materials to resist corrosion, rust, and oxidation, but others don't. CLP has been shown to be exceptional at preventing rust (Combining to form hydrochloric acid? WTF?), so I use it on guns that are vulnerable to rust. I find on my 1911 it seeps into the Parkerization and provides an excellent barrier.
CLP dries out fast though, and it's just sort of OK at cleaning. I don't freak out if there's carbon on the back of my bolt, so I add in a few drops of whatever synthetic lubricant I have on high-wear areas. I've been using M-PRO7 for a while. It stays "Wet" for weeks. I'd think full synthetic motor oil with minimal additives would make a good lube, but I haven't tried it. YMMV.