StevePav
Senior Member
Machinist's Workshop magazine recently published some information on various penetrating oils that some of you might find interesting. The magazine tested penetrates for break-out torque on rusted nuts.
They are below, as forwarded by a friend. 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 oils ........... Average torque load to loosen
No Oil used ...................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 is a "home brew" mix of 50 - 50 automatic transmission fluid and acetone. Note this "home brew" released bolts better than any commercial product in this one particular test. I?ve used this in a marine diesel engine that had rusted to the point it would not turn over. I filled the cylinders with this mix, let it sit, and two days later the engine was once again running.
Note also that "Liquid Wrench" is almost as good as "Kroil" for about 20% of the price.
You can also use ATF and lacquer thinner in a 50-50 mix.
They are below, as forwarded by a friend. 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 oils ........... Average torque load to loosen
No Oil used ...................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 is a "home brew" mix of 50 - 50 automatic transmission fluid and acetone. Note this "home brew" released bolts better than any commercial product in this one particular test. I?ve used this in a marine diesel engine that had rusted to the point it would not turn over. I filled the cylinders with this mix, let it sit, and two days later the engine was once again running.
Note also that "Liquid Wrench" is almost as good as "Kroil" for about 20% of the price.
You can also use ATF and lacquer thinner in a 50-50 mix.