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Home » Public Forums » GMCnet » [GMCnet] Winterize a GM completed coach
[GMCnet] Winterize a GM completed coach [message #337858] Sat, 13 October 2018 23:59 Go to previous message
BobDunahugh is currently offline  BobDunahugh   United States
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma:
Senior Member
Live in Iowa. And never have winterize any of our 78 Royales. As it sits in a heated A/C shop. Now I have a 73 Canyonland. And it's not going inside. Need to do it tomorrow. As I see it. There must be a drain on the bottom of the water heater. And drain the fresh water tank. Put a hose from an RV antifreeze container to the input of the water pump. A qt of antifreeze should fill the water line to the city input line. Then set my compressor to 15 PSI. Attach air line to the city water inlet. Then blow the water lines out. Put antifreeze in the traps. I saw some manual drains. But don't trust them. Bob Dunahugh
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