dodge guy wrote:
Anyone that thinks they get 100% of the water out by blowing air through the system is kidding themselves. water will not move once the air can get through.
So, if air can get through then there must be room for the small amount of remaining water to expand because of freezing and not crack anything?
There are plenty of us who have done this many times who live in areas that see days on end of freezing temps and it has not been an issue. Heck, it is 18 degrees out as I write this and I'm not worried one bit.
You have your way and I have mine and guess what, both work.