POR-15 Rust Remover, Rust Dissolving Solution, Reusable and Biodegradable, 128 Fluid Ounces

good

I had 4 rusty wheels and soaked them overnight in the solution. Washed the wheels and the rust was pretty much gone. For heavily rusted items, i suggest using a wire brush or or a heavy grit sandpaper prior to soaking. Afterwards, I was able to sand and prep for priming and painting with normal effort. I'll use this product again.

Decent but comes in a small bottle

I was working on a project that included nearly 20 feet of chain and a separate pulley. I wanted something that would allow me to soak them rather than to spray. This fit the bill nicely.This is exceptionally easy to work with. After soaking the chain, everything rinsed quite clean. Water rinsing was an added benefit.It was interesting to find that there were areas of paint on the pieces that I hadn't noticed before due to the surrounding rust.

It worked better at removing rust then I though possible! 5 stars

I've used this on a rusted bathtub drain protector, with its attaching screw. I soaked the rusty protector and screw in it for over 24 hours. The product does seem to have dissolved some of the rust, but not very much. I also tried it on a painted heating vent cover with small spots of rust from condensation. Too big to immerse. I applied the product and then re-applied it multiple times. Some rust comes off by wiping using a rag soaked with the product, but not much. The product is not what I hope for.

This stuff is great! I had a bunch of rust on the inside of a trunk lid in areas that weren't easily accessible. I sealed the edges and poured almost the whole gallon in and waited. 8 hours later and almost all the rust was gone! You can see by the pictures a before and after of the same area. That last picture you can see the rust line that shows exactly where the solution was sitting and working before I had to rotate it. I can see how it would be expensive in large amounts if you are doing large panels but if you are restoring a car and want to keep most of the original metal then this is great stuff. A little bit of thought on how to contain the product is all you need for this stuff to go a long way.

The POR 15 is excellent but I saw no results in applying this to the metal I was prepping.