Supco MO44 Rust Buster Liquid Penetrating Oil

Excellent product. I had two very rusted screws and bolts and it only took two minutes after I squirted it on.

You can buy in the aerosol spray, but I find this works better as s soaker when you need to use judicially.

Assume this would have worked on an application where the oil could run downhill. My application was more horizontal so no much of the penetrating oil soaked into the rusted threads.

Just a few drops on a rusty part does the trick for me. I will buy again when needed.

This stuff really worked like a charm!

This product didnt work for my situation. I went by the instructions and it didnt work.

Good penetrating oil.

Great product. Used it on the center assembly of our 11 year old washing machine. Unfortunately the locking nut had fused to the assembly below it. The Rust Buster liquid removed all the surface rust, but after six hours of pounding the wrench in the correct direction for this reverse-threaded nut, it would not separate, so I hacksawed it off. After that the repair was easy (though we never did fix the leak we were trying to get rid of, and wound up buying a new washer). At the end I was disappointed but realized the rust buster wasnt the problem - it actually made the whole assembly clean and rust free.

Specifically purchased to loosen a frozen screw in a handplane. After 8 or 10 tries I decided I was wasting my time. Took the plane outside and torched the snot out of the frozen screw which surrendered instantly.

This worked great getting some rust off of one of my magazines that rusted.