Wednesday, October 13, 2010

Penetrating Oils Compared

Machinist's Workshop magazine is reported to have tested penetrants for break
out torque on rusted nuts. (I'm waiting for vevrification)

Significant results! 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. A local machinist group mixed up a batch and 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.

3 comments:

  1. Now this is good information! I've always suspected that WD-40 wasn't as good as everyone thought.
    ClassicDragsters.com

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  2. have you read the applications for WD 40 it does not claim to be a penetrating oil

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    Replies
    1. I don't claim to be a reporter, journalist, or press... but I still get a press pass to SEMA, LARS, GNRS, Councours events, and car shows. Nit? Picked. Moving along. I'm just putting the info out there, and comparatively, so guys who wrench can an informed decision

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