You got it in one Lynn. The compressed air pushes the water back into the

system maintaining coolant pressure during decent. My bottle is about 1/2 US
gallon.
Ian RV6A Australia

     Ian,

      What is coolent level in your bottle when engine is cold. I am trying to
determine if a one quart tank will provide enough expansion space for coolent.
      My cooling system should hold approx. the same quantity as yours since I
am using G.M. evaporators for radiators.

      Kelly Troyer

 
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