Rust Bullet / POR15 - any good? snake oil????

[madoski]

I was doing some online research and came across a couple forums (non-VW) where guys were claiming that all this stuff does is covers the rust and will flake off after a few years.  They were saying that you'd be better off with a good epoxy primer and regular paint.  I need to treat some holey floor pans and patch them up with fiberglass (temp repair to halt rust and moisture intrusion), and was going to use Rust Bullet (always heard that it was great stuff), but now I'm wondering if I wouldn't be better off with Rust Mort, then zinc primer, and topcoating with a rattle can before laying down the fiberglass.  Thoughts?  Does this stuff hold up any better than conventional high quality paint, or even enamel in a rattle can?

[Ohio Tom (DdK)]

POR15 holds up well. You do have to scrape and grind off all loose stuff that could flake off. It bonds reall well to just about anything (including your fingers). Great substrate for glass work. Should work fine for your application.

[Pro Bug]

A rough surface  will enhance the bonding.

[madoski]

Thanks, there's a long thread on the Samba where it looks like Rust Bullet may have held up better than the POR15...guess I'll give it a shot.  I need to kick something out of my workshop so I can park the car in there this winter.

[Busstom]

I've been using Rust-Oleum's Rust Reformer on a number of non-automotive projects...I discovered it here at work.

I dig the way it works, paint right over it.  Haven't used it on a car yet, though.