Cadillac Repair: 1992 Cadillac Deville cooling system, gasket leaks, head gaskets

Question
I recently received a 1992 Cadillac Deville for my anniversary. We have had the radiator replaced (brand new). The problem is that every fourth day I have needed to replace the antifreeze due to the resevoir being empty. As of today can hear slight hissing from unknown origin. Not seeing antifreeze anywhere from leakage. My car has no lack of performance due to this at all. Any ideas would be of assistance... If you could email back any advice I would be most thankful. Looking forward to hearing from you.

Answer
Cadillac engines have a very long history of small head gasket leaks that leak coolant into the combustion chamber and burn it off thru the exhaust. It is not enough so that you might see white smoke from the exhaust but just enough to use anti-freeze.

If you have NO external leaks, You will have to replace the head gaskets according to the manufacturer's specifications.