Ed's Red

Ole_270

Well-Known Member
you know brake fluid is a great penetrant too it will eat/seep it's way through all kinds of stuff.
it's a last resort, and needs cleaned up afterwards, but it works on the super rusty stuff.
I'm not pouring any in my gun solvent,, but on a stuck bleeder valve or rear spring bolts yeah.
that and a shot of the old Mopar exhaust heat valve unsticker stuff works wonders.

if it's something fine and delicate your not gonna get any better than acetone and ATF mixed 50-50, it will get down into fine threads and small crevices and stay there better than anything else.

My Granddad was maintenence foreman for a cement plant from the late 40s to the late 60s. Brake Fluid was his go to penetrant. I'm sure there's been advances since that time, but he used alot of the stuff.
 

oscarflytyer

Well-Known Member
I use and love Ed's Red. Getting ready to make up another batch and parse it out.

Regarding penetrating oil, always been told/led to believe that Kroil was it. Never heard about using straight ATF, but now I have. BUT - I will throw another curve into that mix! I had a screw that Kroil did nothing for. In a convo with an old school gunsmith, he gave me this advice. Wintergreen Oil!!!

Go to drug store, ask pharmacist for bottle of Wintergreen Oil. Seems it can be poisonous if ingested? And Pharm gave me a real odd look when I asked, but had a bottle. 4oz for $7. Told him what I wanted it for. Not a controlled substance, just odd req

Take an eye dropper, give the stuck screw a cpl drops. wait 24 hrs. rinse and repeat 3x times. Have to give the oil time to penetrate. I did this on a very small delicate 3-4mm screw - 3x times. At the end of 3-4 days, backed right out!
 

oscarflytyer

Well-Known Member
Also, on another note, also getting ready to make a batch of Joe Chambers NGAMU Red Oil (Joe's hand written recipe) . Buddy of mine - shot with them for years, swears by it. But, he also says 22s don't like it in cold weather

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Pistolero

Well-Known Member
The .22 in cold weather is the STP doing what STP was designed to do gum up stuff,
sometimes desireable, other times, not. I'd leave it out of a gun lube/cleaner.

Bill
 

Bret4207

At the casting bench in the sky. RIP Bret.
My Granddad was maintenence foreman for a cement plant from the late 40s to the late 60s. Brake Fluid was his go to penetrant. I'm sure there's been advances since that time, but he used alot of the stuff.

I don't know what standard brake fluid is made up of but I know it's hydroscopic. I think that's the word, it will hold water or attract it or something. That's reported to be why you find rust inside of parts of the brake system that should be air tight and never rust. I know for a fact it will mar, badly, some types of auto paint and it can be death on some "rubber" type products. One of the classic farm fixes for a leaky seal is to add a couple tablespoons of brake fluid to your tranny or rear end or pump. It will swell and soften many types of seals. I would imagine, in fact I know, it will penetrate some types of dirt and rust on equipment as I have used it for that. But it doesn't seem to be much of a lube IME. I can't for the life of me recall it's effect on grease and oils, if I ever noticed in the first place.
 

Bret4207

At the casting bench in the sky. RIP Bret.
I use and love Ed's Red. Getting ready to make up another batch and parse it out.

Regarding penetrating oil, always been told/led to believe that Kroil was it. Never heard about using straight ATF, but now I have. BUT - I will throw another curve into that mix! I had a screw that Kroil did nothing for. In a convo with an old school gunsmith, he gave me this advice. Wintergreen Oil!!!

Go to drug store, ask pharmacist for bottle of Wintergreen Oil. Seems it can be poisonous if ingested? And Pharm gave me a real odd look when I asked, but had a bottle. 4oz for $7. Told him what I wanted it for. Not a controlled substance, just odd req

Take an eye dropper, give the stuck screw a cpl drops. wait 24 hrs. rinse and repeat 3x times. Have to give the oil time to penetrate. I did this on a very small delicate 3-4mm screw - 3x times. At the end of 3-4 days, backed right out!


Oil of Wintergreen was an old timey trick. And yes, it's supposed to be a very deadly poison. I'm not sure if it's one of the ones you shouldn't even get on your skin and that might depend on what it's distilled into- alcohol, a petroleum based substance, water, natural oils, etc. My wife had some mint oil tincture I think she made that if you got it on you finger tip, just a drop and wiped it right off, you'd taste the mint within a minute or so in your mouth. Some of that stuff is nothing to play with, even if you mouth does taste minty fresh!

ATF was reputed to be what Singer Sewing Machine Oil was, more or less. That was another old timey "secret". Marvel Mystery Oil was also supposed to be heavy on ATF. Seafoam and several other carb cleaners are allegedly heavy on acetone and something like benzine with some wood alcohol mixed in. Who knows? Some works, some doesn't. You can look at the MSDS and get a basic idea but what quantities of what substance are mixed in makes it what it is. The good smelling ingredient of Hoppes #9 is supposed to be banana oil! Whatever it is I like it a lot.

FWIW, I've tried several of the "non-toxic" cleaner/degreasers marketed and the "environmentally friendly" type of mineral spirits/paint thinner. It's wasted money IMO. One of the cleaners is called "Simple Green" and is supposed to be the cats. IME it's not even as effective as hot, soapy water, but it's a lot more expensive. Maybe I'm just impatient, but I'll stick with plain old diesel for parts washing, followed by an ATF scrub followed by an ether washdown if I want something really clean.
 

Brad

Benevolent Overlord and site owner
Staff member
Oil of wintergreen is methyl salicylate. Common in some linements for sore muscles.
It can be toxic in small doses. One ml, 20 drops, is equivalent to 6 regular strength aspirin. That means a teaspoonful would be equivalent to 30 tablets. Even a few drops could be dangerous for a young child.
 

358156 hp

At large, whereabouts unknown.
I don't see methyl salicylate listed in the MMO SDS, but the smell of wintergreen is unmistakable. More accurately, it smells like chewing tobacco.
 

popper

Well-Known Member
Brake fluid is nasty stuff. Absorbs water and is very flammable when it does. 10% and 450F will cause a fire.
 

RBHarter

West Central AR
It reacts violently with pool tablets and powders too . So don't store it in the wash room or pool pump house .
 

fiver

Well-Known Member
I remember someone doing a video years back mixing brake fluid and something else to make a nasty smoke bomb that went on for minutes.
 

Pistolero

Well-Known Member
Ordered some wintergreen oil to try out. Got an old gun with stuck screws, so far acetone and ATF
haven't got it going. Will see what wintergreen oil does. Will wear nitrile gloves when using
it.

Bill
 

462

California's Central Coast Amid The Insanity
My gunsmithing friend recommends oil of wintergreen, but I've never tried it.
 

Chris

Well-Known Member
There was a test of some sort done a few years back comparing ATF/Acetone with all the big name "penetrating lubricants", everything from Gibbs, to Kroil to WD40 to PB Balster. ATF/Acetone out performed them all. Now, whether it was an unbiased, accurate test I can't say. Some folks say the best rust losener-upper is boiling hot hot water or steam.

I had read that too years ago. I found the results posted below, but note that the protocol was for an 8 hour soak before loosening. Also, Amazon has oil of wintergreen, just bought some there.

"The April/May 2007 edition of Machinist's Workshop did a test of penetrating oils where they measured the force required to loosen rusty test devices. Buy the issue if you want to see how they did the test. The results reported were interesting. The lower the number of pounds the better. Mighty interesting results for simple acetone and tranny fluid!

Penetrating oil . Average load .. Price per fluid ounce
None ................. 516 pounds .
WD-40 .............. 238 pounds .. $0.25
PB Blaster ......... 214 pounds .. $0.35
Liquid Wrench ... 127 pounds .. $0.21
Kano Kroil ........ 106 pounds .. $0.75
ATF-Acetone mix.. 53 pounds .. $0.10

The ATF-Acetone mix was a 50/50 mix (1 to 1 ratio)."
 

Bret4207

At the casting bench in the sky. RIP Bret.
Oil of wintergreen is methyl salicylate. Common in some linements for sore muscles.
It can be toxic in small doses. One ml, 20 drops, is equivalent to 6 regular strength aspirin. That means a teaspoonful would be equivalent to 30 tablets. Even a few drops could be dangerous for a young child.

Brad, do you know if "oil of wintergreen" is actually made from wintergreen plants? I've read about it for years, but my wife is a big hebalist type and I've never noticed anything about wintergreen in her books. I thought it might be one of those old names that stuck through the years.
 

Bret4207

At the casting bench in the sky. RIP Bret.
I had read that too years ago. I found the results posted below, but note that the protocol was for an 8 hour soak before loosening. Also, Amazon has oil of wintergreen, just bought some there.

"The April/May 2007 edition of Machinist's Workshop did a test of penetrating oils where they measured the force required to loosen rusty test devices. Buy the issue if you want to see how they did the test. The results reported were interesting. The lower the number of pounds the better. Mighty interesting results for simple acetone and tranny fluid!

Penetrating oil . Average load .. Price per fluid ounce
None ................. 516 pounds .
WD-40 .............. 238 pounds .. $0.25
PB Blaster ......... 214 pounds .. $0.35
Liquid Wrench ... 127 pounds .. $0.21
Kano Kroil ........ 106 pounds .. $0.75
ATF-Acetone mix.. 53 pounds .. $0.10

The ATF-Acetone mix was a 50/50 mix (1 to 1 ratio)."

That's the one Chris. Well done! FWIW, PB Blaster is good stuff if used as it was intended to be used. It's original purpose was to soften hardened grease, like in a spindle tube on a wagon gear. Works great for that but not so much as a penetrating lube IME. Stinks too to my nose.
 

Brad

Benevolent Overlord and site owner
Staff member
Brad, do you know if "oil of wintergreen" is actually made from wintergreen plants? I've read about it for years, but my wife is a big hebalist type and I've never noticed anything about wintergreen in her books. I thought it might be one of those old names that stuck through the years.
It was extracted from wintergreen plants in the past but today is made in an industrial plant.
 

RicinYakima

High Steppes of Eastern Washington
The commercial stuff is not chemically pure, so I don't know what it is dissolved in for a carrier. Very basic, but I don't look up how strong it was.