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Re: Winterizing the GMC [message #105538 is a reply to message #105467] Tue, 09 November 2010 13:40 Go to previous messageGo to previous message
Jim Galbavy is currently offline  Jim Galbavy   United States
Messages: 1443
Registered: August 2007
Karma:
Senior Member
Mike,

I too now have the water heater bypass. ....but before I did (and the drain valve for my water tank was stuck open) I used to pump out as much water from the system as I could. Once the pump would flutter, I would pour antifreeze into the water tank and pump it from the water tank thru the cold and hot water lines until pink would come out of all of the faucets and toilet and then into the black tank. Once that is done, using a handpump (that you can get at any RV store) pump antifreeze thru the city water connection. With all of the water lines full of antifreeze leave all of the faucets open for expansion if the temperatures get too cold. Worked for me for 4 years until I got the water tank drain valve fixed and a water heater bypass installed. If your drain valves work, drain the system down and then open the faucets one at a time starting with the closest faucet to the water tank clearing them with compressed air (20psi will do).

jim galbavy
'73 X-CL ANNIE)
Chesterfield, Va / Lake Mary, Fl

 
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