Afraid of the answer.....

[Geof3]

That is a significant leak, and as stated above, once the firewall access is removed (very easy overall) I’m thinking it will be pretty obvious. The primary coolant hoses run straight down the center of the car, it is possible a clamp is loose, or you have a small split or something. Usually, if you have a pressure issue, you would be blowing coolant out of the reservoir overflow which should empty on the right side of the car just in front of the rear wheel. Your leak is someplace toward the front of the engine most likely. If it’s anywhere on the front of the block you will notice it right away. If it’s a hose, you might need to put the thing in the air and pull the underside rear panel (easy as well) and look for the “wet spot”. The thermostat hose can be a little bit of a bugger to fully seat and get the clamp on properly. As it was replaced, I would start there...

[robdelorenzo]

The people on here know what they are talking about (myself excluded) listen to their advice, they are here to help. I have to agree that the leak you are experiencing is way more significant than what I had. The drain hose for the coolant tank is found up under the passenger rear tire. You will see a short stubby hose that is open on one end if you remove the tire. It took me a while to figure out that's where the coolant was coming from. With the help from here, I followed the hose up to the small drain hole in the top of the coolant tank. From there, it was either the caps leaking or the bleeder valve. Stick with it, the coolant system only has so many parts, it's sealed and under pressure so finding the source of the leak will become apparent.