What paint for chassis parts?

[Gerard]

Hi,

I cleaned up all the paint and rubbish from the struts, subframe,
control arms and anti-sway bar. Then I got some cold galvanising primer
and aerosol satin black paint to get it neat and tidy. Discovered the
stuff just chips too easily so imagine how it'll stand up to engine
chemicals and road grim and stones/sand flying all over the place on the
road. Just had the bushings put in and the wheel bearings and the stuff
has come back with big chips all over the paintwork. Wasted enough money
so far, so now going to sandblast the paint off again and get some
decent paint onto it.

Now, what to get that will stand up to a bit of stone chipping and brake
dust, oils, other chemicals, whatever? Auto refinish place said
polyurethane/akaline 2K paint or an enamel of some sorts. Enamel is
cheaper and I only need a primer and thinners. The 2K stuff needs
thinners, hardener, and etch primer with a activator.

What'd stand up to road abuse and give a smooth finish (on parts no-one
but I will see :))?

G.