I'll be on vacation for ten days at the beginning of December and I want to run that marine antifreeze through my Titan. Do I just empty the water out of my water box and fill it up with Antifreeze, flush the antifreeze through the system, and keep refilling it until pink antifreeze comes out my solution hose? Is there anything else that I need to do to help protect any freezing that might occur if the space heater in the truck loses power?