Onan waterlift drain

[Doodie99]

From what I see the Onan waterlift muffler does not appear to have a drain. Any thoughts on winterizing it?
Usually I have drained them and added a little Antifreeze just in case.

 

[rslifkin]

I don't drain mine, I just run antifreeze through the raw water side of the generator cooling system and exhaust. On mine, the muffler doesn't hold all that much, so it's showing antifreeze at the exhaust by the 3 gallon mark (so I give it 4 to make sure there's sufficient concentration in the muffler).