I had a minor leak on my old 95's radiator. It only leaked when it sat in the Winter. I had the car for 15 years, never replaced it. It only leaked a very small amount, and eventually stopped for like 8 years, then started again right before I sold it.
Never leaked once it got warm out. If yours is about the same, I would just keep an eye on it. Sometimes, laziness pays off!
97 T-Bird LX 4.6 - 68k miles
94 Supra TT Auto - street/strip car
04 Crown Vic Police Interceptor - Brenda's car
95 T-Bird LX 4.6 - fully optioned, owned 15 years
96 Cougar XR-7 4.6- Brenda's car, owned 11 years
88 T-Bird 3.8 - first T-Bird, owned 5 years