Rust Dissolver Gel

The por 15 mob opposition to kbs make a product similar to fish oil but better. It is called sw2. I have used it and am pleased with it as it crawls into places and after a few days dries hard. not real cheap but what is in those products. Have used the stuff from rust solutions in brisbane and they make a gel but have to cover with glad wrap for a few hours. Total different products than por or kbs.
Graham