Forgive me as this year is the first time I have winterized an I/O. After changing the oil and fogging the engine, I came up with a novel way to put anti-freeze after draining it. Wanted to see if anyone saw any problems with it. On my Ford 302, the water temp sensor screws into the intake manifold about 2 inches from the tstat housing. I pulled the sensor and used my drill pump to pump in over 2 gallons of the pink stuff. I popped the drain valves for a second, closed them back off, waited a few minutes for any air to bubble out, topped it off, and re-installed the sensor. I then pulled the front hose on my log style manifolds (after draining) and pumped them full. My hope is not to have to keep up with plugs over the winter, and when spring gets here, hook it to the hose, fire it up, blow out the fogging oil,and go boating. Any thoughts?