Tips and tricks: I read on other posts where folks looking to touch up the paint on their black Mercury lower units were not satisfied with the paint options that they had or the color match. I have been using this Rust-oleum product and, as far as I can tell, it an exact match for color. It also flows well and is easy to get the paint job done right.
I used this to do a couple pieces, complete redo. I haven't tried to spot and blend yet. Dries hard as nails and looks really good. Going to try the other on the cowl