I used the duplicolor hemi orange from the parts store on my junk,that way all the touch up stays the same as time goes by.

rustoleum has a single stage hemi orange if your wanting a qaurt to spray on the engine,it works very well and holds up good.

done the engine in the mud truck with some tractor paint that was a hemi orange..or close to it anyways,its tuff as nails,we went ahead and painted the whole truck with it.

the plasticoat is ok but I had better luck and had to touch up less often with the duplicolor.

remeber with any paint..result will vary.

just noticed your title also