Penetrating Oil
Machinist Workshop magazine recently tested penetrating oils for break-out torque on rusted nuts. They "scientifically rusted" a bunch of nuts, treated them with various penetrants, and then measured the torque it took to remove them. Here are the results:
- Nothing__________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 that the "home brew" was better than any commercial product.
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Every twenty minute job is one broken bolt away from a three day ordeal.
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