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Thread: best penetrating oils

  1. #1
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    best penetrating oils

    This story came to me from one of the guy's in the EAA club Interesting !!


    Subject: Fwd: Penetrating Oils
    "Machinist's Workshop" recently published information on various penetrating oils. The magazine reports they tested these products for "break out "torque" on rusted nuts and bolts. A subjective test was made of popular penetrating oils, with the unit of merit being the torque required to remove the nut from a "scientifically rusted" bolt.
    Average torque load to loosen nut:

    No Oil used ........................516 foot pounds
    WD-40 ..................... ........238 foot pounds
    PB Blaster .........................214 foot pounds
    Liquid Wrench ......................127 foot pounds
    Kano Kroil .........................106 foot pounds
    ATF/Acetone mix..................... 53 foot pounds

    The ATF/Acetone mix is a "home brew" mix of 50/50 automatic transmission fluid and acetone. Note this "home brew" released bolts 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 almost as good as Kroil for 20% of the price.
    ATF/Acetone mix is best, but you can also use ATF and lacquer thinner in a 50/50 mix. ATF = Any type of Automatic Transmission Fluid
    "Folks is funny critters."

    Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire

  2. #2
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    I first heard about that mixture several years ago, tried it, and have been using it ever since. Kroil is a good commercial product, too, but the 'home brew' beats it.
    Jim D.
    Adapt, Improvise, Overcome!

  3. #3
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    but how do you get in those spray cans jim??? you know you need to get it on that one nut in under that cover to make the rest of the mower accessable
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  4. #4
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    Quote Originally Posted by larry merlau View Post
    but how do you get in those spray cans jim??? you know you need to get it on that one nut in under that cover to make the rest of the mower accessable
    Trigger spray bottle My son has been doing antique engine and tractor and now auto restoration for years and used the home brew.
    Last edited by Roger Newby; 12-11-2012 at 12:07 AM.

  5. #5
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    Roger, the acetone would eat right through most platic bottles. Something like Nalgene (expensive) might resist though. Howzabout a plain old oil can? Do they even make those anymore?
    "Folks is funny critters."

    Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire

  6. #6
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    Quote Originally Posted by Frank Fusco View Post
    Roger, the acetone would eat right through most platic bottles. Something like Nalgene (expensive) might resist though. Howzabout a plain old oil can? Do they even make those anymore?
    Or maybe one of those fill-it-yourself spray cans from Harbor Freight?
    Jim D.
    Adapt, Improvise, Overcome!

  7. #7
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    Thanks Frank, This was really interesting/useful.

  8. #8
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    I've stored Acetone in a bottle similar to these for years. No meltage yet.

    Click image for larger version. 

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    http://www.harborfreight.com/pack-of...aps-66170.html

    <fast forward through time just slightly>

    Ok, I have some of these in the garage so just went and put some acetone in it to test it out. If it melts, I'll let you know.

    But while we are on the general topic, any recipes for a home made 'cutting oil', for drilling and tapping holes?
    Last edited by Brent Dowell; 12-11-2012 at 04:41 PM.
    Programmer - An organism that turns coffee into software.
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  9. #9
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    FYI, Don't ever put acetone in one of these glu-bots to try and clean it out. It will melt. DAMHIKT

    Click image for larger version. 

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    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  10. #10
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    quote...But while we are on the general topic, any recipes for a home made 'cutting oil', for drilling and tapping holes?
    Last edited by Brent Dowell; Today at 11:41 AM.end quote....


    Bacon grease but it goes bad over time. Condensed milk for brass and copper. WD 40 for Aluminum. But the real stuff is cheap enough in small quantities..

    Garry

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