It seems like many people are having problems with the rad leaking...is this true? My Low Coolant idiot light came on last week, and I checked for leaks and there was no coolant residue to be found anywhere around the radiator or the overflow tank. When I installed the rad, I am POSITIVE that the system was totally full because it took me damn near 4 days to freakin burp the whole system to the point where it was full and had no air bubbles. When I checked the system the other day when the light came on, the overflow tank was a few inches lower than the COLD level written on the tank, and the car was hot. I don't understand.