Used to be a product called "Kroil" and it was advertised as being the oil that creeps. Modern version available otc known as Deep Creep and I have used that with varying degrees of success. All that aside, BIG WARNING TIME!!!
DO NOT go anywhere near those bolts or any others with open flame heat such as a torch once you have applied any type of penetrating oil. Possibly a no-brainer here but heat times the chemicals typically mixed and put under pressure as rust and corrosion attackers can easily result in a violently toxic fog or fumes that, if inhaled, or otherwise exposed to, can put the user in anywhere from emergency to the grave.
Knew an individual who wrote professionally as part of his work. He actually authored a column several years back on how he had used brake cleaner as a means of removing crud and corruption from an assembly he was working on and then attempted to heat several attaching bolts using a torch. He collapsed from the fumes, ended up in hospital on oxygen due to lung issues, and had to go back in again for other problems with various organs, all of which was ultimately traced back to the cleaner he used. Turned out that the version of the brake cleaner that he used possessed a Chloro-Fluorine-Carbon based compound as part of its chemical recipe and when the heat hit the spray residue, it transformed the compound into CHLORINE GAS. While I personally do use Brake Cleaner for just that purpose I deliberately use the CFC free version in the green label can and/or make sure that the product is Chlorine free. I also do not have torches in my shop, not only because of the possibility for chemical poisoning but because I also have wood around for other projects and fire and wood do not mix well unless they are in a fireplace or deep pit.
Nick
DO NOT go anywhere near those bolts or any others with open flame heat such as a torch once you have applied any type of penetrating oil. Possibly a no-brainer here but heat times the chemicals typically mixed and put under pressure as rust and corrosion attackers can easily result in a violently toxic fog or fumes that, if inhaled, or otherwise exposed to, can put the user in anywhere from emergency to the grave.
Knew an individual who wrote professionally as part of his work. He actually authored a column several years back on how he had used brake cleaner as a means of removing crud and corruption from an assembly he was working on and then attempted to heat several attaching bolts using a torch. He collapsed from the fumes, ended up in hospital on oxygen due to lung issues, and had to go back in again for other problems with various organs, all of which was ultimately traced back to the cleaner he used. Turned out that the version of the brake cleaner that he used possessed a Chloro-Fluorine-Carbon based compound as part of its chemical recipe and when the heat hit the spray residue, it transformed the compound into CHLORINE GAS. While I personally do use Brake Cleaner for just that purpose I deliberately use the CFC free version in the green label can and/or make sure that the product is Chlorine free. I also do not have torches in my shop, not only because of the possibility for chemical poisoning but because I also have wood around for other projects and fire and wood do not mix well unless they are in a fireplace or deep pit.
Nick