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-   -   Rusty Nut Removal Comparison Test (http://forum.e46fanatics.com/showthread.php?t=859756)

Jim Murphy 07-27-2011 07:31 AM

Rusty Nut Removal Comparison Test
 
For those of us who have suffered this frustration:

from About.com discussion on removing frozen fasteners.....

Rusty Nut Removal
For those of us who do our own restoration work, here's some interesting comparisons on penetrating oils sent by a friend. 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.

Hope that this helps.
Jim

mletchworth 07-27-2011 12:36 PM

Interesting. Hopefully those are averages, and they didn't just use the results of one nut for each product.

phamine 07-29-2011 05:46 PM

I'm surprised. I think pb would be better than liquid wrench.


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