well, I found out the problem the hard way this morning...it overheated to the red again...after I just put coolant in it...and well the coolant tank was empty and nothing in the cap...and there is a leak...the gasket for the thermostat for some reason is not sealing....now neither is the old gasket....

this morning i watched the water leak out as i was pouring it in...am frustrated here...but at least I know what's wrong...