Well, as some of you know I had a 88 Bayliner with a 5.0 OMC for 23 years which I swapped engines in and knew very well inside and out. This month I ran across a newer boat and decided to upgrade. It is a 2003 Caravelle Interceptor with the Merc 5.0 MPI Alpha One. It has the Merc single point drain system and I have read a few negative comments (particularly from Bondo regarding the inability to remove "crud") and since the reason I swapped engines in the old boat was from freeze damage. I am skeptical about trusting all of the water is out of the system by simply using the single point drain. Obviously there are two solutions, get in and manually remove the hoses etc and drain or add antifreeze. Since the second option seems less work, where is the best place to add the antifreeze?? Seems not so easy to get at the thermostat housing on this one. The older model OMC had far fewer hoses and I could drain everything in about 5 minutes or less.
