Tightlines666 wrote: but surprisingly a 50:50 mixture of Acetone:Automatic Transmission fluid is the best. Though be careful exposing plastics to Acetone as it can damage them. John
This was posted on another forum in support of John's post
PENETRATING OIL COMPARISON
Machinist's Workshop magazine tested penetrants for break out torque on rusted nuts. 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. The results are as follows;
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.