Yes....I know a sad subject.
I had my dealer winterize my trailer as I was having warranty work done anyway. I'm going to de-winterize it in the spring and winterize it going forward. As noted in the many threads on the subject, there are three ways to winterize: compressed air, antifreeze, and go to Florida (I prefer this method, but, it's not in the cards)
My question is:
Unless I'm missing something, why would anyone
not use the compressed air method? It is certainly more cost effective, less time required and does the job?