Rust Bullet vs POR 15

A paint guy I have a lot of respect for used to use POR-15 and has switched to Zero Rust - I would suspect RB is pretty much the same as ZR - no iso's to worry about...

I bought the 6pack of 3 auto and 3 regular half pints of rustbullet about 4 months ago. I treated the following areas of my car: under the fender wells, the entire rear seam area under the bumper, inner and outer floor pans, and just about any surface rust I could find. It goes on good and heavy, dries hard, and sands nicely. I cleaned the areas pretty good, but still painted over paint, undercoating, etc in areas. It adhered to all very well. It also sticks to concrete very well, because I still have specks on the floor of my shop. I never used POR15, but would use the rust bullet again.

Let me know how your trial works out. I don't want this car to fall to pieces.......

I just used POR 15 on the whole cowl. I guess that time will tell. The POR 15 went on very easy. It goes a lot farther than I looks like it would. It flows out well and dries really shiney. I'm not sure if thats good or bad. It's going to be hard to buff it up to prime it where I put it. It looks like a good product to me if you can follow all the directions and not drip sweat into it. It looks like it'll last a long time.

Of course I'll use it till it's gone. I don't think I have that much rust so I might not have to try antthing else.

With the RB, the prep time is shorter than POR-15. For P15 to work, they say you have to use the prep stuff fist...