Lifetime Member #116
Dave's '82
Just one does not help as much as the two because the heat migrates up the water in the open hose. You only need to close them in the spring and then open them in the fall, not much trouble at all.
I put mine so you can get at both from the engine compartment.
Part
numbers for the valves at NAPA:
3/4
inch 660-1413
5/8
inch 660-1414
StingrayJim
NCM Lifetime Member #1936
Stingray's '76���������������������������� StingrayJr's '78���������������������������Lil Red '94
(click each one to see a bigger version)