My radiator on my 1998 cadillac deville is leaking antifreeze, although it doesnt overheat cold it be the hos?

The bottom / penger side of the radiator will leak some times. It seems to be where the hose is located, a gasket hasnt blown off, the water pump area is dry, and the radiator itself does not show any leakage either. Could the hose at the bottom be loose due to the care being old or could the hose be old enough to expand & thats the reason why it leaks. Every few days the cars computer will say " collant level low". I have seen the area im speaking of leak & than I will fill the reserve & all will be fine. It seems it happens in hotter weather ? anwsers please I need help, going under the car this weekend. It seems Cadillacs are very intricate cars !