I am new to the RV world. We just bought our first travel trailer, a new 2013 27odk. We took it out for the maiden voyage last weekend and had a great time. I'm very pleased with the trailer. I need to get it put into storage in the next few weeks but must first winterized it. I think I can figure out what I need to do, but any tips and pointers would be greatly appreciated. I did buy a pump bypass kit that has a hose where I can siphon RV antifreeze out of the jug and pump it through the system. My plan was to drain all the tanks as best as possible and then run the RV antifreeze through with this siphon hose kit. I guess a few questions I have is 1- do I run some into my water heater? How much? 2- how do I fully drain the water heater of water? 3- What does the blue hose between the tires on the right side of the trailer drain? 4- how much RV antifreeze should I dump in the fresh water, grey, and black tanks? Anything else I need to think of?