My 2005 Honda Civic EX has been overheating. I will be taking it in to a shop soon, but just wanted to see if anyone can diagnose what could be the problem.
I noticed the overheating a couple weeks ago, and after checking the Reserve tank and Radiator, I noticed they were both low. I (accidentally) overfilled the Reserve tank, and filled the Radiator. I used a 50/50 mix.
Today, around 3 weeks later, the car is overheating again, but it was perfectly fine for the past 3 weeks with 0 overheating.
Today when I opened the hood, I noticed wet spots underneath the Radiator and Overflow tank, but nothing near the Radiator cap. The Radiator needed a good 5-10 seconds of Coolant to top it back off. Here is a picture of the wet spots
Here is where it gets weird...I opened the Overflow cap to see a dark mixture of fluid all the way at the top!! The Coolant I used is bright orange...
Any ideas about what could be the problem? I don't get how the Radiator was empty but the Overfill was full of this darkish mixture...
EDIT: Also, I have no idea if this is even normal or not...but if I turn the air heater to hot, but leave the strength of the air OFF, I still feel hot air coming through the vents...Never have I had that happen in other cars