Supco MO44 Rust Buster Liquid Penetrating Oil

Unstucks frozen nuts and bolts 9 1/2 out of 10 times.

I have used many products over the years to loosen rusted on nuts attached to bolts. The Supco Rust Buster works fast and does not smell. This is the best rust buster sold.

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 wasn't the problem - it actually made the whole assembly clean and rust free.

Works great on old hard to remove rust and build up, on all areas of my mobility scooter, after being left out in the weather for a couple of years! In mild central California coastal area. Takes many attempts and elbow grease, but all works again now! Wonderful product that will be in my toolbox forever!

It's a lad costly so it's not the first rust penetant that I use. But when something is really stuck this will often get it out when no other options will

Great product

I haven’t used it yet, but the plumber we had used it and it worked great. That’s the reason I bought it.

Looks like just water! Can't tell if it works or not