On Tue, 27 Aug 2013 15:48:11 -0400, Metspitzer
wrote:

Adding pure antifreeze would have been just about the right amount
actually. Half of the system should have been 7 quarts of pure
antifreeze. I put 4 quarts of antifreeze and 3.5 quarts of water.

The manifold hose thermostat needs to open. Then water can circulate
through the engine block and heater core.

Run the engine to open the T-stat.