Well its that time but as of now I have not got my 454/bravo 1 running. I've always winterized a running motor. What is the best way to winterize a non runner?
1) Pull the hoses off of the sea water pump, let them drain.
2) Open the drain plugs on both sides of the engine block - they are just above the oil pan. You may have to poke them with a wire or small screw driver to get them to drain.
Fogging is more or less optional. I don't think I have ever fogged a 4 stroke engine for winter storage, and rarely fog 2 strokes. That would be the only step that would require a running engine, the rest is just draining &/or refilling.
Winterizing a running engine thru the outdrive is a crapshoot anyway so draining aal the water out is always a much safer bet. Some of us chose to fill the block with antifreeze to help control rust, but that is an option depending on personal thoughts, has nothing to do with actually keeping an engine from freezing over the winter as air don't freeze.