[MuseChaser]

Get the starter package of POR15 products. Nothing else will stop rust. You'll need to paint over it and it'll take some work to get your touched up spot to blend seamlessly (an impossibility in my experience, but I stink at body work), but when faced with a choice between a near-perfect finish with the almost certainty of returning and increasing rust, or an imperfect job with rust pretty much eradicated permanently.. well... I'll take the cure over the bandaid any day.