[Dunk]

Actually I would recommend Corrosion Block for all the painted metal surfaces. Remember everything you spray on an IO engine will eventually wind up in the blige, so be ready for that.. Then use CRC Heavy Duty Corrosion Inhibitor on the electrical wires, the connections, under any rubber protector caps and especially the main circuit/fuse panel on the boat. CRC HDCI is a heavier coating that will stay in place at least two years. It's too heavy for general spraying. Corrosion Block comes in a light and heavy duty versions. The light version is what you want for general spraying, but the CRC is better for long term protection of electrical connections.. The next step up is Boeshield T9 which drys to a heavy waxy coating. It's a little too much...