Hard freeze / clear any water out?

[Tahoe Gator]

We are expecting our first hard freeze tonight (27F). I am wondering if I should do anything special to clear water out of the cooling circuit on our 2019 SuperJet? It was flushed by hose after last use. Do I need to push compressed air through the flush kit attatchment? Or is that overkill and any water in there still has plenty of room to expand as it freezes?

[K447]

What does your Owners manual say about preparing for winter storage?