OK as promised the update on the cause. The leak came from multiple things. Back in august I was in an accident that twisted the front end a little bit. I had the car professionally repaired, but apparently the radiator got twisted a little bit somewhere in the entire process. This caused it to rub against the cooling fan and started a small leak. Carry on to a few months later when I decided to take my car through a little mud into some timber. The mud pit wasn't deep and only the length of a barn, but apparently deep enough for my bottom radiator support to scoop plenty of it up and finish off the radiator. Lesson learned, the Aveo is not a rally racer. Removal and re-installation of the radiator is very easy, just takes a little attention to detail. I will post an update on a few notes I made in the how-to that is on this forum shortly.