Blow out or Use the pink stuff my personal review

I seem to distrust displacing water with fluid vs compressed air which could leave water in a low elbow or something ...

After normal antifreeze through the lines procedure I drain the system through the low point drains again, and dispose of that antifreeze into the holding tanks.

When un-winterizing don't forget to flush the low point drains and each and every tap. The tiniest bit of antifreeze caught in the standing side of a T will add taste to a million gallons of water seems like.