I bought this car, the red 2003 Aero Sedan back in March. I gave it a pretty good look over but it was so clean and well maintained that I didn't get too detailed. The alternator went kaput on it last week, I have it on the jackstands and I'm taking the opportunity to do some preventive maintenance such as seals, air filter and the belt. I had noticed a small coolant leak and when checking the reservoir, discovered that the coolant is green. To my knowledge our cars take the orange colored Dex-Cool. I haven't had any cooling system problems during the time I have had it on the road but I wonder if the green stuff could cause long term problems like corroding alloy parts. Maybe that's why I have the leak. I can't spot exactly where it's coming from. The general area is passenger side front, near the air filter.