Thread: ATF/Acetone mix
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Old 05-05-2015, 02:29 AM
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Default ATF/Acetone mix

"Machinist's Workshop" recently published information on various penetrating
oils. The magazine reports they tested these products for "break out "torque" on rusted nuts and bolts. A subjective test was made of popular penetrating oils, with the unit of merit being the torque required to remove the nut from a "scientifically rusted" bolt.

Average torque load to loosen nut:

No Oil used ....................516 foot pounds
WD-40 ..................... ......238 foot pounds
PB Blaster ......................214 foot pounds
Liquid Wrench ...............127 foot pounds
Kano Kroil ......................106 foot pounds
ATF/Acetone mix............ 53 foot pounds

The ATF/Acetone mix is a "home brew" mix of 50/50 automatic transmission fluid and acetone. Note this "home brew" released bolts 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 20% of the price.
ATF/Acetone mix is best, but you can also use ATF and lacquer thinner in a 50/50 mix. ATF = Any type of Automatic Transmission Fluid

This version of the story was in one of the USA's Military Vehicle Club newsletters.
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