Penetrating Oils Compared
Machinist’s Workshop magazine actually tested penetrates for break
out torque on rusted nuts. Significant results! They arranged a subjective test of all the popular penetrates with the control being the torque
required to remove the nut from a “scientifically rusted” environment.
|Penetrating Oil||Average Load|
|PB Blaster||214 pounds|
|Liquid Wrench||127 pounds|
|Kano Kroil||106 pounds|
|ATF-Acetone mix||53 pounds|
The Automatic Transmission fluid (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
*Note also that “Liquid Wrench” is about as good as “Kroil” for about 20% of the price.