O.o hmmm I really did not think about the decreased size in the thermostat would allow more water to cool vs leaving it open.
And no I do not have a heater hooked up just yet I'm still trying to figure out the main things first. Which I do understand if I had a heater hooked up that it would allow it to cool more even through the core. I have put my hose in, let it run a few minutes, pull a drain plug, fill her up, ect. I'm a little unsure where the rust would be at?
And never have I had a thermostat in here I just assumed that during august and September I would need as much waterflow as possible but it seems that it is wrong.