Machinist's Workshop magazine actually tested
> penetrants for break out
> torque on rusted nuts. Significant results! They are
> below, as
> forwarded by an ex-student and professional machinist,
> Bud Baker.
> *Don't forget the April 2007 "Machinist's
> Workshop" magazine comparison
> test.
> 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
> about as good as "Kroil" for about 20% of
> the price.
> Your experience may vary, etc., etc.
You could wear gloves to save your nails.