This is forwarded from the ABC list where it was posted from another list, etc, etc... Monte
<quote>
Machinist's Workshop magazine actually tested penetrants for break out torque on rusted nuts. 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.
Type of 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.
</quote>
