What Product To Brush On Rusty Metal, Suggestions Please

All of these products use Phosphoric acid so even Coke would work.

If you Google for: naval jelly
You'll find quite a few products. Amazon has ratings.

Most rust converters will do the job. Eastwood is good and there is a 3M product. You can find it at auto and marine supply stores. I've used rust converters off an on for over 20 years. Always had good results.

Be sure to prime and paint after the converter dries otherwise the rust will come back.

When I was into classic cars I would use the Eastwood product. It's as simple as brushing off the loose rust then coat with the rust converter, then the final top coat such as Rust-Oleum. This stuff is bulletproof and will last forever.

Home Depot lists several 'rust converter' products. A quick google search and I found this product. http://www.eastwood.com/eastwood-rust-converter.html

I have not used either products. I did use something about 10 years ago, it was supplied by a paint company to my work to try out. As I recall it would have a name like 'rust n a me' and it basically converted the surface rust into a very tough primer that was easy to paint, and a hard surface that accepted paint easy. We used Williams Paint as our supplier, and they probably had a rust seminar one day at lunch and presented a 'new' product for everyone to test out. Over the past 10 years, the company that produced that product could have been bought out, and names change, ect.

Good luck,

Fred.