BigE_
Platinum Member
Found this on different forum; interesting:
Penetrating oil . Average load .. Price per fluid ounce
None ................. 516 pounds .
WD-40 .............. 238 pounds .. $0.25
PB Blaster ......... 214 pounds .. $0.35
Liquid Wrench ... 127 pounds .. $0.21
Kano Kroil ........ 106 pounds .. $0.75
ATF-Acetone mix.. 53 pounds .. $0.10
The ATF-Acetone mix was a 50/50 mix (1 to 1 ratio)."
The above has one typo (which was in the original article as well): Instead of ATF it should be PSF (power steering fluid).
See http://sterkel.org/systems-engineering-associates.com/papers/avocations/Testing_Penetrating_Oils.pdf