[davids2toys]

Sure is a very interesting approach, and easy. In theory it sounds pretty good. However I think because the thermostat is in and closed and because the car is not running. You are still draining coolant out of the block from the lower rad hose into the rad. So the coolant in the engine is lowering and the coolant going into the tank cant get back in the engine at the same rate because the thermostat is closed. I would think that alone would create air bubbles no?