How do I winterize the washing machine in my motor home?

At home I use the pink non toxic rv anti freeze and cycle it to spin it out and pump it out. I do the same with the home dishwasher.

I have never had a problem. Worst item for me is the frig with water and ice in the door. This year I blew out the small plastic lines in the frig and removed the multi valve solenoid bank and brought it with me.