Thanks Dennis - That's interesting I should check that out. I have not looked in the radiator when the thermostat opens. I do know that when I pour water in, it takes a while to "percolate" down into the radiator - I'll have to stop after a half gallon while the water seeps in then I can continue. What does would swirling indicate? Is that because the water has few places to pass to the lower radiator?
- Doug
