Hi. I'm sure this has been asked before, but this weekend i'm going to winterize my boat. When i warm up the engine,should I first run water through the stern drive to open up the thermostat? Should i just let the engine get to operating temp without water to open the thermostat? Also,how much antifreeze should I run through the engine. I know thier basic questions,but i'm still learning. Thank you for any advice in advance.