Penetrating oil
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Joined: Jan 2001
Posts: 16,882
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From: SE Wisc. (the Rust Belt)
Penetrating oil
I posted this in the Cool Tips thread at top of the board but I thought I'd post it here for the guys that don't check that thread on a regular basis.
This was posted on the Ford Barn by CapnJohn:
There's been a lot of discussion on this board and other about the best penetrating oil and I thought this was very interesting.
This was posted on the Ford Barn by CapnJohn:
I'm not going to verify or endorse this. Draw your own conclusions.
Happy knuckle busting !
Machinist's Workshop magazine actually tested penetrants for break out torque on rusted nuts. Significant results! They are below, as forwarded by an ex-student and professional machinist, Bud Baker.
They arranged a subjective test of all the popular penetrants with the control being the torque required to remove the nut from a "scientifically rusted" environment.
*Penetrating oil ..... Average load*
None ..................... 516 pounds
WD-40 .................. 238 pounds
PB Blaster ............. 214 pounds
Liquid Wrench ..... 127 pounds
Kano Kroil ............ 106 pounds
ATF-Acetone mix....53 pounds
The ATF-Acetone mix was a "home brew" mix of 50 - 50 automatic transmission fluid and acetone. Note the "home brew" was better than any commercial product in this one particular test. Our local machinist group mixed up a batch
and we all now use it with equally good results. Note also that "Liquid Wrench" is about as good as "Kroil" for about 20% of the price.
Happy knuckle busting !
Machinist's Workshop magazine actually tested penetrants for break out torque on rusted nuts. Significant results! They are below, as forwarded by an ex-student and professional machinist, Bud Baker.
They arranged a subjective test of all the popular penetrants with the control being the torque required to remove the nut from a "scientifically rusted" environment.
*Penetrating oil ..... Average load*
None ..................... 516 pounds
WD-40 .................. 238 pounds
PB Blaster ............. 214 pounds
Liquid Wrench ..... 127 pounds
Kano Kroil ............ 106 pounds
ATF-Acetone mix....53 pounds
The ATF-Acetone mix was a "home brew" mix of 50 - 50 automatic transmission fluid and acetone. Note the "home brew" was better than any commercial product in this one particular test. Our local machinist group mixed up a batch
and we all now use it with equally good results. Note also that "Liquid Wrench" is about as good as "Kroil" for about 20% of the price.
Cargo Master
Joined: Feb 2008
Posts: 2,795
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From: Windermere Valley,B.C. Ca
Hum, not questioning the test results, but a couple of things come to mind, acetone I think by itself evaporates very fast so maybe the ATF keeps it in suspension and in some cases you would lose the convenience of the aerosol, unless you where to use a pressure pot type oil can? 
Senior User
Joined: Feb 2007
Posts: 234
Likes: 0
From: KC Kansas metro
I wish they had tested Gibbs Brand, I have always heard it was the best and very different than anything else. A few comercial shops I know use it exclusively. It is not cheap though. For bodywork, it can be sprayed on bare metal to keep it from rusting and then painted over. I was introduced to it when looking for a coating to keep polished magnesium wheels from oxidisng, which they will normally do almost before your eyes.
Post Fiend
Joined: Jun 2001
Posts: 7,493
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From: Erie, pa
When working with exposed metal that can't be properly protected from rain/moisture I spray it with Pam cooking spray - I like the Garlic Flavor best.
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Laughing Gas
Joined: Nov 2006
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From: Olive Branch,Ms
I wish they had tested Gibbs Brand, I have always heard it was the best and very different than anything else. A few comercial shops I know use it exclusively. It is not cheap though. For bodywork, it can be sprayed on bare metal to keep it from rusting and then painted over. I was introduced to it when looking for a coating to keep polished magnesium wheels from oxidisng, which they will normally do almost before your eyes.
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Junior User
Joined: Dec 2003
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I recently mixed up a batch of approx. 75% Ultra Low Sulfur Diesel and 25% 15-40 motor oil because I ran out of everything else I had at home and didn't feel like going to the parts house. I put it in a little squirt can and to tell you the truth it works better than anything I have bought off the shelf lately.
Elder User
Joined: Sep 2004
Posts: 863
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From: Grain Valley Mo.
After reading that Gibbs prevented rust on bare metal, I tried it with two other brands bought at Auto Zone and they both worked great. Freshly blasted metal setting on my garage floor all winter and no rust. Now, weather paint will ever stick to it is another question!....Rod
Fleet Mechanic
Joined: Dec 2005
Posts: 1,603
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I should shut up, but Ive been doing this stuff for way to long. My father always
with a bottle of snake oil, me just watching with a torch. Me, I win. Kroil, all the
above, I got it. Now we are rebuilding track rollers (excavator) my kids under there
like grampy with his spray he broke all the bolts. Now I got double the trouble
Heat rules.
with a bottle of snake oil, me just watching with a torch. Me, I win. Kroil, all the
above, I got it. Now we are rebuilding track rollers (excavator) my kids under there
like grampy with his spray he broke all the bolts. Now I got double the trouble
Heat rules.
Senior User
Joined: Aug 2007
Posts: 160
Likes: 0
From: Enfield Connecticut
I gotta say PB Blaster has been the best for me, but you need to spray it on and wait a few days. Not exactly convenient, but it's better than breaking something.
For lubing anything, I like white lithium grease from liquid wrench.
For lubing anything, I like white lithium grease from liquid wrench.
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