Quote Originally Posted by ghosthunter View Post
Yes, it is good to use rust converter before painting because it converts the rust into an inert protective layer which helps the metal under it from rusting.
and brotherly advice, after painting your vehicle please refrain from washing your vehicles. Just wipe your vehicles with pranela soaked in water then pigain. Through this method you'll prevent rusting of your vehicles.

I've been doing this for more than 20 yrs na. Take note preserved ang pagkalata ng mga sasakyan nmin po.