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Penetrating Oils tested

JohnB

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This is very interesting ............sent to me by a friend.........


Machinist’s Workshop Mag™ 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 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.

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 the best and you can also use ATF- lacquer thinner 50 - 50 mix.

*AFT=Automatic Transmission Fluid
 
WEASEL-PEE RULES!!
 
My experiments haven't been nearly so "scientific", but more "real world" IMO. What I have found is that Kroil & PB Blaster are roughly equal, while Liquid Wrench trails badly, as does WD-40. Maybe I used the wrong kind of ATF, but "weasel pee" didn't seem to do much either.

Part of the secret though, is to give it plenty of time to work. Overnight is good, a week is better.
 
And I thought "Acetone" was a Jane Fonda work out video.
 
John B, thanks for posting those results. I learned about Liquid Wrench as kid from my father, working around home plumbing projects. Like it and PB Blaster. As I learned from our own Dr. Entropy, Weasel Pee Rocks!
 
Thanks to the BCF I learned about KROIL and love it. I never had much luck with Liquid Wrench. Randall's point about letting it work is right on.
Thanks for the info John.
Dick
 
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