Working on a T roadster. The sides of the frame will be exposed. I want the car satin or hot rod black. I would like to paint the frame with brush/rollers. I do want the sides, rear end, front axle to look decent. I am thinking about Rustoleum satin enamel. I contacted the company and they say not to put any hardner in the paint. I thought the hardner would make the paint more durable. Also the car will not be parked outside and you know driven to cruise ins and shows but I do not want the frame fading out due to UV. Should I worry about the UV? Is there something better I could apply using a brush and roller? I plan to have the body, grill shell, and gas tank spray painted by a pro.
If you decide to go with Rustoleum/Tremclad (the Canadian version of Rustoleum) you can add a product called Japan Dryer. It speeds up dry time and helps to harden the paint.
I've used a "hot rod black" satin two part urethane and rolled it onto my frame. It has a slightly pebbly texture and looks great.
I've used Satin Black Rustoleum both on the Studebaker frame as well as the T Roadster. If the car will spend the predominate amount of it's life indoors I wouldn't worry about it. Although I sprayed both frames, later I had to make modifications to both frames and I just brush painted my "fixes" and it looked fine.