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aa3jy 08-22-2013 04:49 PM

Busting rusted nutz
Off another site..might be of some use..

> 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

miatapaul 08-22-2013 07:51 PM

Re: Busting rusted nutz
I have seen this before, seems I have read folks with mixed results with the ATF/acetone mix. I wonder if Synthetic ATF would make a difference? That is what I happen to have a partial bottle of. I want to get some Kroil to try. I have had had very good luck with Wurth Rost Off Extra and I used to own British sports cars and a bunch of other old rusty cars so I have busted some knuckles, I mean nuts in my days!

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