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  1. #1
    Junior Member azbusmo's Avatar
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    Subject: Penetrating Oils - FYI







    Penetrating Oils

    Machinist's Workshop MagT recently published some information on various penetrating oils that I found very interesting. Some of you might appreciate this. The magazine reports they tested penetrates for break out torque on rusted nuts.

    They are below, as forwarded by an ex-student and professional machinist. They arranged a subjective test of all the popular penetrates with the control being the torque required to remove the nut from a "scientifically rusted" environment.



    *Penetrating oils ........... Average torque load to loosen*



    No Oil used ................... 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 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 about 20% of the price.



    Steve from Godwin-Singer says that ATF-Acetone mix is best, but you can also use ATF and lacquer thinner in a 50-50 mix. *ATF=Automatic Transmission Fluid

  2. #2
    Senior Member assquatch20's Avatar
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    Just remember that acetone is very volatile and typically removes paint from stuff. Ventilated area, no flames, etc. That mix works wonders on airhead exhausts, though. I'm more surprised that humans can displace that much torque with a lever as small as a wrench.



    Reminds me of an old saying: "Speed is how fast you hit the wall. Torque is how far you move the wall."

  3. #3
    Senior Member elime's Avatar
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    I had an old outboard motor with a ton of salt corrosion. If I tried to remove a screw the head just snapped off. I sprayed all the screws everyday for a month with WD40 and after that every single screw came out very easily, even the remains of the ones where the heads snapped off.



    Whatever you use be patient. I bet they all work well if given enough time.
    Long live the internal combustion engine!

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    Senior Member yz250f4ever's Avatar
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    Thats extremely interesting. I have never heard of an ATF+acetone=Penetrating oil. Next time I have a stuck bolt I am gonna try that. In this test kinda like Tony was saying did all the penetrating oils have the same amount of time to sit and work? or did some get more time to sit than others?
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    Senior Member Point37's Avatar
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    pretty cool!...def gonna mix up some of this in a plastic bottle

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    Senior Member BBMS's Avatar
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    Thanks for the information! That's most useful!

  8. #7
    Junior Member medicjeff's Avatar
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    Interesting... thanks for putting that up. I had a bout with a stuck chain adjusting bolt in the swing arm on my KTM and hit it with PB blaster daily for about 4 days with no luck. I finally got so frustrated I drilled the stupid thing out. I got lucky and managed to be able to re tap the hole and use another OEM adjusting bolt, albeit with anti seize.

  9. #8
    Senior Member peruano's Avatar
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    Not only is acetone volatile, i.e. explosive potential, but it also is extremely harmful to breath so definitely use that ventilation suggestion. We don't want to cook our livers with things that are not fun. Tom
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  10. #9
    Senior Member assquatch20's Avatar
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    Quote Originally Posted by peruano View Post
    Not only is acetone volatile, i.e. explosive potential, but it also is extremely harmful to breath so definitely use that ventilation suggestion. We don't want to cook our livers with things that are not fun. Tom


    No doubt about that. If nothing else, the headache is incredible, believe me.

  11. #10
    Senior Member JagLite's Avatar
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    Yes, acetone is bad stuff.

    Is lacquer thinner any better health-wise?



    Thanks for posting the results!

    I'm going to buy some more Liquid Wrench.

    But I do have some ATF on hand, and lacquer thinner too.
    James

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