2010 - Volume #34, Issue #3, Page #37[ Sample Stories From This Issue | List of All Stories In This Issue | Print this story | Read this issue]
Best Penetrating Oil Is The CheapestMachinist's Workshop magazine recently tested penetrating oils for break-out torque on rusted nuts. They "scientifically rusted" a bunch of nuts, treated them with various penetrants, and then measured the torque it took to remove them. Here are the results:
Nothing 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 that the "home brew" was better than any commercial product. Note also that Liquid Wrench was as good as Kroil for about 20 percent of the price.
Thanks to reader Larry Heineman at L&G Products Co. (manufacturer of "Add-A-Stick" excavator extensions - www.add-a-stick.net) - for passing along this story.
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