POR 15 users
I hate sanding. what I like about por-15 is that it likes a little tooth to stick to. I am not going for a show quality perfect frame. I want a solid color, black, protected frame. So I clean it, knock the big stuff off. I like that it applies with a brush. I don't have to tape off as much because I don't have to worry about overspray.
I have also used their spray primer, por-15 and the topcoat. I used the topcoat semigloss on the engine bay.
You can do as much prep as you want. This is as much as felt like doing.

I used metal ready on this and then painted it

Note the big stack of razor blade wrappers by the Dremel in the top left. This was a dark time ...

I am happy with this type of result. With the body off and more discipline , you could probably do even better.

Their products work as advertised for me.
The Best of Corvette for Corvette Enthusiasts
If Your Car is gonna be a Garage Queen POR15 will hold up just fine , and so will the stuff in a rattle can. But if You are going to drive it expecially in the rain or Snow it will NOT hold up.
I spent a considerable amount of Money along with a lot of My time coating the Frame of My then new 2002 Silverado , I followed the directions to the T , used the Marine clean , and Metalready . I even cleaned with Metalready and wire brushed everything again 2 years later and recoated with POR15.
I live in the Rustbelt and this Truck is My dayly driver . Rust is everywhere POR does not stick to anything but Hands and Cement. The coating is very tough , but once it gets a chip Water and Salt get under it and the Rust will undermine it like Powder coat on cheap lawn furniture. You can grab a loose end and literally pull the stuff off in sheets. The only thing that I would ever use this product on is to waterproof a concrete block wall .
The one product that I have had good luck with is Rust Bullet and I topcoat it with Eastwood Chassis Black as it only comes in silver. Do a google search for Rust Bullet it's amazing stuff , adheres to almost anything and can be topcoated with other paints without having to buy expensive "tie coat" like POR15. I wish that I knew about it when My Truck was new.
i love the stuff

Rick B.
If Your Car is gonna be a Garage Queen POR15 will hold up just fine , and so will the stuff in a rattle can. But if You are going to drive it expecially in the rain or Snow it will NOT hold up.
I spent a considerable amount of Money along with a lot of My time coating the Frame of My then new 2002 Silverado , I followed the directions to the T , used the Marine clean , and Metalready . I even cleaned with Metalready and wire brushed everything again 2 years later and recoated with POR15.
I live in the Rustbelt and this Truck is My dayly driver . Rust is everywhere POR does not stick to anything but Hands and Cement. The coating is very tough , but once it gets a chip Water and Salt get under it and the Rust will undermine it like Powder coat on cheap lawn furniture. You can grab a loose end and literally pull the stuff off in sheets. The only thing that I would ever use this product on is to waterproof a concrete block wall .
The one product that I have had good luck with is Rust Bullet and I topcoat it with Eastwood Chassis Black as it only comes in silver. Do a google search for Rust Bullet it's amazing stuff , adheres to almost anything and can be topcoated with other paints without having to buy expensive "tie coat" like POR15. I wish that I knew about it when My Truck was new.






Not kidding here. If you're under it while paintng wear a mask too. With gloves. It likes to set up house on your skin if you don't get it off quickly.
You must follow the directions and I'd put two coats on or one coat and chassis Black to UV protect. I use a string (550 cable) and a sponge to get inside the frame rails.















