Holding tanks frozen. Now what?

[Ryan Wright]

Thanks for the responses, everyone. I'm going to try the salt with the
5 gallon bucket method first.

Didn't some Wanderlodges come with heated holding tanks? How did this
work - did they route engine coolant through a heat exchanger? Which
years would have had this option available?

This summer, I think I may rebuild my drain system. I'm envisioning
electric dump valves, fully insulated drain pipes wrapped with heat
tape, and a second drain "port" with a fixed/hard mounted macerating
pump. Some extra insulation around the holding tanks, as Ernie did,
etc.

-Ryan
'86 PT-40 8V92