31 below zero, RV antifreeze failed?

I have been doing this for many years and we have had great results. Completely drain the water from your rv using the low point drains, then use the bypass to pump rv antifreeze into the lines, faucets etc. After that drain the rv antifreeze using the same process you did before. I catch the draining antifreeze and use it in my black tank for a little extra. No air compressor needed.

Following this procedure we have almost no (I said almost) smell, and it is easy to rinse the pink out of the system since there's not much left. I should add that I bypass the water heater first and never put any rv antifreeze in the fresh tank. It makes it very easy in the spring when I want to use the 5th wheel. My biggest concern for people that use air to blow out the lines is how do you flush the water pump?

My belief is that with not leaving the rv antifreeze in the lines all winter the smell doesn't get into the lines nearly as much. Plus the last thing in the lines was the antifreeze so even if it collects in a low spot nothing will get damaged. Trust me, with my luck there would be a plastic fitting that was the low spot and it would break! I do have pex lines, but the fittings aren't and I am not taking a chance with them. 😉