Can't user 5er again this winter - replace red goo in pipes?

Thing is. the antifreeze replaced the water in the lines. Unless you have put more water in the lines, there is no water in them to freeze. Remember winterizing just clears out the water, and it is the water that freezes. So no water, no freeze. I would not worry about it. You have already removed the water. It doesn't matter if there is antifreeze there or not. As long as there is no water.