What to use for truck running board paint?

[cmbrucew]

https://www.napaonline.com/napa/en/p/DC_TR250/
Napa has bed liner in rattle cans.
May this myself to save removing the boards.
There is also a masking tape with a wire to make straight lines.
Bruce

[GreenMonster48]

I used Rustoleum black engine paint on my running boards and Lizard Skin on the underside to reduce pinging etc. from rocks and stones hitting the underside.

[TStiles]

Easypoxy, a urethane one-part marine paint, might be a viable option for you. I've used it extensively for boat decks (walk-on) and it lasts through years of traffic and is simple to recoat if you ever need or want to. The stuff's not cheap, but you certainly get what you pay for.

http://www.pettitpaint.com/product.asp?id=45