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Rant In Favor of 3-IN-ONE® Oil

Jul 16, 1999

I love the stuff, it's not the same as WD-40, it is made by the same company but the properties are much different in my opinion. I use it to clean out the pivot area of my knives all the time, it literally turns that invisible (at the time) dirt into black sludge that I can easily wipe away for good. 3-IN-ONE is the best. It, unlike WD-40, actually DOES protect against rust , and does a damn good job of it too. It smoothes up the action on brand new knives, and using it liberally really helps to break in a knife during a few hundred cycles. Just like the bottle says, it "Lubricates, Cleans & Prevents Rust". Almost every knife I have has a high carbon blade, and I have yet to see ONE speck of rust on any of them. I know, there are knife-specific oils out there that were made to do the jobs listed above, but if you really think about it, the modern folder is the perfect venue for a tin of 3-IN-ONE Oil. I recommend a small tin of Multi-Purpose 3-IN-ONE Oil for any folding knife enthusiast, period.


Robert Joseph Ansbro

If it can be written, or thought, it can be filmed.
-Stanley Kubrick, 1928-1999
I buy marvel mystery oil in the quart can and use it for lots of things including my knives. Seems to penetrate really well.

I would not advocate using 3 in 1 oil on your guns. It gets gummy, and begins to thicken around freezing.

I saw this first hand one winter day when a friend and I went out hunting jackrabbits because the weather warmed up to 15 below. Cabin fever had an impact on our decision process that day.

Anyway, I bagged 2 jacks with my Gold Cup lubed with Tri-Flon and loaded with tgt wadcutters. Roger, did I mention he was cheap, had lubed his gun with 3 in 1 and his 223 Contender wouldn't fire. I could actually see the hammer fall! Not real slow, but hammers should be invisable in action and his deffintly could be seen.

It took a lot of years, and I've still not broken him completely of the "just as good" syndrome, but he's a work in progress, and a good friend! -Brian
Well, this is a bit odd, but for my stainless folders, I have used olive oil for the past year. I carry a CS Voyager and it would tighten up every so often. After cleaning and oiling with WD-40 or any other petroleum-based oil I could not stand the residue on my clothes or the smell on my fingers. Olive oil solved the problem. It's practically clear (or a little green) and has almost no smell. Works like a charm, too. Keep the action quite smooth.

I agree and advocate the use of 3in1.I have been using it on my knives for years.It's good stuff.
3-in-One is better than WD-40, but not by much. If you guys would spring for an ounce of the good stuff, the Sentry products or Break-Free or Rem-Oil or any of the premium gun oils, I think you would have no difficulty at all detecting the difference. Yes, they're more expensive, but one ounce will oil a lot of knives. There's a point of diminishing returns in being a cheapskate....

-Cougar Allen :{)
I tried it on one of my Balisongs once......ONCE..... the stuff turned into thick black crap in about 20 minutes. Gummed up the works completely!

Clay G.

I saw a demo of Militech synthetic old on a

WD40 & 3in1 & LSA seized up pretty quick. The only thing that stood up close to the Militech was light machine (sewing machine) oil.


BreakFree is a good product; I use it to protect firearms and to lube folders... I have also noticed that my Voyageurs stiffen up from time to time. BreakFree has the advantage of not picking up gunk.
I agree with Shoozto. The Militech weapons grade synthtic based metal conditioner is great for autos and folders. A small drop works great in autoa and folder type knives. I buy mine at gun shows in Virginia. Im convinced.
I like Break Free ("CLP"), too. As they'd say on SNL, "it's a lubricant and a salad dressing!"

One thing about it -- make sure you shake the bottle VIGOROUSLY before use. The teflon crud separates from the "oil" and settles to the bottom. If you don't shake it, you'll end up using all the oil and have a bunch of teflon left over at the bottom of the bottle.

If you get yourself one of the little bottles that goes along with the cleaning kit that stows in the stock of your M-16A2 (it's only as big as your thumb) you can take it anywhere).

"Come on you sons of bitches, do you want to live forever?" Gunnery Sergeant Dan Daly, USMC the battle of Belleau Wood 1918

If the 3-In-One oil turns to black sludge, then whatever you were using the 3-In-One on is filthy. The oil bonds to unseen dirt and creates that sludge, you wipe it away and add more 3In-)ne until the knife is 100% clean and 100% smooth.


Robert Joseph Ansbro

If it can be written, or thought, it can be filmed.
-Stanley Kubrick, 1928-1999