POR-15 40701 Rust Remover, 1. gallons

Totally removes the rust and doesn't etch the steel. Very impressed, and water based product which is super easy for clean-up. Highly Recommend!! Saw a youtube video comparing other brands and this one was one of the best and definitely the best for the price.

Works like advertised. Had a wind chime that was full of surface rust. Submerged it for about 24 hours and it took of about 90% of the rust

Decided to try this instead of wire wheeling parts, works great. This is after about 12 hours, steel pieces worked just as good in an hour. The cast caliper took longer. But nees a good 4 liters to really soak bigger pieces. I do recomend it..

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.

Used on restoration of two rust covered carbon steel pocket knives. At 12 hours it had stripped away the corrosion and loosened up the slip joints as well. Easy to follow directions. Easy cleanup.