cleaner

What do you all use to clean your engines? What are the best results and what do I need to look out for? http://picasaweb.google.com/m/viewer#photo/CSMckillip/5405606617022603825/5430887646435156530

My e38-200 has a fairly wet bilge and I'm assuming that's true for most Ericsons as well. I suspect it's because my halyards are in-mast, allowing rainwater to drain into the bilge inside the mast. Has anyone found an effective bilge cleaner other than the West Marine varieties that are...