Re: Rust preventive
If we are talking about a lower unit, I would be inclined to sand out the rust spots to bare metal, then use a zinc phosphate primer (or really any good primer). Repaint with an off-the-shelf spray in the appropriate color (Tempo has a variety of colors). I've also had good success with regular auto paints. I think the trick is to keep at the touch-up so the rust doesn't take hold.<br /><br />Here in Maryland, I've also used transparent anti-fouling spray made for lower units. This adds extra protection. If you don't need anti-fouling protection, use a clear coat for a similar effect. You can buy clear coat whereever you purchase auto paint.
