Winterizing- rv antifreeze vs. blowing out lines

Drain water heater, use bypass, blow out lines, fill lines and traps with anti freeze. All this takes less time than it does to haul out compressor and air lines.

Winterized almost 3 weeks ago for the first time.After researching, I decided to fill the lines and traps with antifreeze. I wanted to protect the pump. Antifreeze is cheap. Pumps are not.

Blow out the last few years. Cheaper faster.

It must be Fall because we are now getting the winterizing questions. For previous posts on this popular subject search this Forum for `winterizing' then search the results for `blow' or `blow out' and read on.
Never could understand why, for $12 in antifreeze, all RVers don't use the pink stuff!

Air only in the lines. AF in the drains. A gallon of AF lasts a couple years for me. Trailer survived -20*F last winter and the water system was fine when I put pressure to it this spring.

I pump the pink stuff in all lines including my outside shower , this gets all lines including the pump. The only thing that does not get is my black tank flush , for that I use an air compressor and put one of those .50 cent adaptors on , a few seconds of air into the black tank and we are good to go.

It's always a sad day when this topic come up.... :(

Last winter I used my compressor to blow the water out of the lines.
I poured AF into the traps, I did not add antifreeze to the lines.
I had no problems in the spring.
I plan on doing the same thing for this winter.

I think folks on these forums are 50/50 divided on this topic.

I've got a new TT this year, so I'll be doing both. Actually, I'm going to try something different this year.

1) blow the lines out first
2) pump the pink stuff
3) blow out the pink stuff (so it will all go down the p-traps and holding tanks.)

Water lines should be pretty empty, but pink residue left in the lines can be seen through those plastic lines. I'm curious just how much REALLY get's blown out. So, I'm experimenting this year.

I have always only blown out the lines. I do leave the air hooked up for at least ten minutes. I also make sure I open all the drain lines while this is going on. I have never had a problem. When our son played college baseball I would have to blow out the lines after every trip so I did do it frequently although late February and March are not the coldest months but still would get below freezing for extended periods of time. Better that watching a baseball game in snow. However, everyone seems to have a strong opinion on this topic.

While blowing out the lines, turn on the pump with an empty fresh water tank. The pump will pump out any water in the pump. Check the strainer to be sure it is also empty.

Personally, I use the pump to put the pink stuff in my lines, protects the pump and strainer too.