So that was just about everything I did during 2014. Now it came time to winterize the RV for winter. Which was interesting, as there are a ton of different things people do. Some were very helpful and said "I don't know, I just drop it off at the dealer..." Gee, real helpful. Anyways, this is what I found, and this is the way I did it. Which of course I believe is the correct way to do it.
I am fairly certain the PO didn't winterize it properly, which led to my awesome first experience.
Step 1: Emptying all the tanks - fresh, gray, and black. The local RV dump site had a hose on site, so I refilled the black tank about 3 times with the hose to make sure all of those pesky political promises were emptied out.
Step 2: Emptying the water heater. Easy enough. My TH has a Suburban brand water heater. It uses an anode rod. Since the tank is steel, the anode rod contains "stuff" (You can see I like to use very technical terms) that allow the minerals in the water to eat the anode rod instead of rusting the tank. The drain plug for the water heater has this anode rod attached. Once the water heater was drained, the drain plug went back in. Next was to shut off the water heater from the rest of the plumbing. There is a simple valve that you shut off so the water doesn't go through the heater (look at picture).
Step 3: Blowing out water from the lines. I bought this thing from Amazon. It's worth it's weight in gold:
http://www.amazon.com/Camco-36143-B...8&qid=1425189380&sr=8-1&keywords=rv+blow+plug
You hook it up to your air compressor, set the regulator to about 35 PSI (Too much PSI and you can blow seals/gaskets). Screw the attachment into the city water hook up, then go to each water valve (cold/hot on each sink, shower, toilet, outside shower...everything). The pressurized air blows out the water. Once you get nothing but air, turn that one off, then move onto the next.
Now the trailer is completely dry. This is where some people say you are good. If there's no water, then there's nothing to freeze and burst the pipes. I suppose that is reasonable logic, but I put RV antifreeze in anyways. I also removed the built-in water filter in preparation for the next time.
Step 4: Running the RV anti freeze through the system. It would take a LOT of RV anti freeze if you added it to the fresh water tank and used the water pump to push it all through. I put about 4 gallons in and it still wasn't enough to pick up anything. Now, you CAN dilute the anti freeze, but too much and you're missing the point of doing this in the first place.
The pictures are horrible, but what I did was disconnect the hose that goes into the water pump. I then just got a piece of hose and stuck it straight into the antifreeze bottle. This is way easier and uses way less anti freeze. It will take 4-5 gallons to winterize everything. Now you do the same thing as blowing out the lines. Turn on water pump, and go to each water outlet and let it run until the pink antifreeze comes out. Each hot/cold, shower, toilet, etc. For good measure, I poured an additional few cups down each drain trap to fill up the traps with anti freeze. I also put about a gallon of anti freeze in the toilet.