I recently completed a DIY radiator swap, tossing out a broken stock radiator with the Alradco aluminum one. This is also the first time i've generally paid attention to the temp number on the instrument cluster too. The general operating temperature is from 190 - 221, which I think is good, but the temp swings from one to the other. One issue I'm running into is that when I shut the car off, the coolant reservoir overflows and I leak coolant from the spill over tube. Is this something I should be concerned about? I let the car run at idle after the swap was complete and new coolant was put it in, making sure there was no leaks or hose disconnects. I let the car idle for a while with the reservoir cap off too, is that considered bleeding?