I bought my 2005 TJ Rubicon about a month ago. It has around 188k on it. I noticed that the coolant in the reservoir was a little low. I replaced it. I also have smelt coolant while running the air or heater. Last week I noticed it was a little low again. I replaced it. I park on a concrete pad and haven't noticed any coolant on the ground. Yesterday I came out of work and saw a pool of coolant on the ground. I open the hood and the reservoir was still full but the radiator was a little lower than I've seen it. I drove home, open the hood and saw coolant pooling at the bottom of the radiator. Doesn't look good to me, I'm afraid it will cost me an arm and a leg or at least the money I was hoping to use to buy bumpers. Any suggestions or estimated cost?