I've been driving a 1988 Cadillac Deville and it has begun leaking a lot of antifreeze. I could start the car and about 5 minutes later it will start leaking antifreeze and you can see antifreeze leaking under the car in between the front two tires. I drove it for about an hour and the "STOP:ENGINE TEMPERATURE" light DID NOT come on. I'm really not sure what is going on. Can anyone please help me figure out what is wrong or how to fix it? All help is greatly appreciated.