I just did a trip to Death Valley in Feb. I did not want to do all that sanitizing work on the road. I sanitized at home them immediately re-winterized by blowing out the lines and half a gallon pink stuff in the sink and the other down the toilet.
When I got to DV all I had to do was fill the FW tank/water heater.
Then I had the problem of re-winterizing while on the road. I ended up in Lone Pine, CA for a couple days. Stayed at a full hook up campground where I (for the first time) tried a small air compressor with a small pancake tank.
It has an on/off valve on the air line. I drained everything then blew one water line at a time by letting the little AC build up pressure and releasing it 3-4 times each line till no more water came out.
My TC is small and the lines are short. Don't know if this would work with a larger RV as the compressor doesn't have much volume.
