Hi wondering what everyone is using for rust paint on the underbody?
Thanks​​​​​​

 

POR15 usually does a good job.

 

POR15 is what I used. I'm sure there are others out there as well too.

 

POR15 only bonds to rusty metal. If you only have light rust, and remove most of the red oxide with a wire brush or sandpaper, then apply POR15, it'll peel right off. It almost has to have a nasty pitted surface to really adhere. Maybe it's just me, but most of the places I used it after scrubbing away the worst of the rust, it just peeled off later. Rattle-can Rustoleum seems to work nearly as well, assuming the area isn't something that has to look fantastic.

 

RustSeal

 

If you use their metal prep prior to painting you can paint on clean rust free metal. As far as I know it etches the surface of the steel.

 

Rust Bullet is out there as well.