Originally Posted By: Kestas
I found an interesting post on another site.
http://forum.doityourself.com/automotive-service-repairs/413928-green-brake-fluid.html#post1679080
"
Penetrating Oils Compared
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.*
*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.* "
I want to know if those machinists tested a control group of at least 38 rusted bolts with no penetrant to make sure that they did not get semi-random results.
Good thought, regardless.
K