Nick has a very good reply. About 1 hr ago on
one of the sports channels on TV they showed Suzuki (sp) in a do-it yourself bit where they used large ammounts of what was said to be "a silicone based spray" all over the insides (under the engine cover)of their 120 or 150 hp (whatever hp)engine. They sprayed the exhaust manifolds, intake, wires etc. Everything.I wasn,t paying attention to the show but the spraydown did make me look. I would check with a Suzuki, or other OB manufactures service departments before doing this. It sounded like they thought it was a good thing to do. Myself, I just wipe everything down with a good soft rag that has been lightly sprayed with carburator cleaner. Enough to dampen the cloth and clean, but not enough to leave damp traces. This way you get up close and personal with your motor and have a leasurely time inspecting everything. If the dirt and oil are too heavy to clean this way then you better fix the source.RayS/V Speedy