Best Penetrating Oil Test, surprise winner
#1
Best Penetrating Oil Test, surprise winner
Haven't seen this here so thought I would post this article regarding various penetrating oils and how well they work. Several surpises.
I have the fixings in my garage now so essentially the best is free for me.
Jim Henderson
Thanks to Matthew J. Michalik who posted this on the Yahoo group:
Machinist's Workshop Mag (tm)recently published some information on various penetrating oils that I found very interesting. Some of you might appreciate this. the magazine reports they tested penetrants 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 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.
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.
I have the fixings in my garage now so essentially the best is free for me.
Jim Henderson
Thanks to Matthew J. Michalik who posted this on the Yahoo group:
Machinist's Workshop Mag (tm)recently published some information on various penetrating oils that I found very interesting. Some of you might appreciate this. the magazine reports they tested penetrants 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 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.
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.
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#7
I'm disappointed that Pepsi was not tested. The phosphoric acid in soft drinks, combined with the agitation from the carbonation bubbles, do wonders for rusted fastenters.
The only reason I could think the winning ATF-acetone mixture might not be commercially viable, if anyone is thinking of marketing it, is the flammability and VOC content of acetone.
Jim
The only reason I could think the winning ATF-acetone mixture might not be commercially viable, if anyone is thinking of marketing it, is the flammability and VOC content of acetone.
Jim
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#8
I don't see what the VOC/flammability would have to do with marketability. I can buy pure acetone at any of the local big-box stores. I think the real reason is that the formula is out there, and there's no good way to patent it when everyone can buy the ingredients off the shelf for less than it could be profitably marketed for.
To a previous poster: the point of the "scientifically rusted bolts" is to remove a variable from the testing. Either the bolt/nut is going to come off, or something is going to break. ATF/acetone appears to be the formula that makes the first outcome the most probable. Sometimes nothing will work (when the rust is in effect a cold weld--the two threaded surfaces are no longer metallurgically distinguishable).
Jason
To a previous poster: the point of the "scientifically rusted bolts" is to remove a variable from the testing. Either the bolt/nut is going to come off, or something is going to break. ATF/acetone appears to be the formula that makes the first outcome the most probable. Sometimes nothing will work (when the rust is in effect a cold weld--the two threaded surfaces are no longer metallurgically distinguishable).
Jason
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