What I would like to do here is: to collect the experiences of members who had treated the body with visible rust spots 3 years ago. Interesting is what exactly was done, with which (chemical) means and whether the rust came back after 3 years (or earlier). I just had to treat my car and could not find any reliable information besides a cavity treatment test, which are traceable over several Jaher. Most people write about the just freshly performed rust treatment. But how that looks after 2-3 years comments then. So I will search the forum and ask the authors of the posts, which are for more than 2 years in the past, to post their investigations here by PM. Then one can learn from first hand what has worked and what does not. If you personally have the experiences, write like this too here. It only has to be enough time since the treatment has passed. If I know someone else who has done this, I would also be happy if you want to contribute to the thread. The Zinc wall can not do so originally.