Can I repair a leaking mercedes radiator?

[BlackIce71]

I have a 99 E 320 with 147k miles with a tiny leak in the cooling system that I was just told is from the radiator. I know there are products sold out there that claim to fix leaking radiators. Does anyone out there know much about this stuff and has used it? I like to think I am not a cheapskate but if I can repair it then why not? I would like to hear from anyone who has done this and what was your experience?
PS: The coolant doesn't leak all the way only enough to trigger the coolant low light. It doesn't overheat or anything at all, even after a 500 mile trip that I just did.
I just filled it up and I figure the light would come on after about two weeks meaning the leak is very tiny..

Any advice will be appreciated.

[Bandit]

Just pour two egg whites into the radiator. When the hot egg white hit the air at the leak it dries in place and plugs it up.

[Bandit]

Just pour two egg whites into the radiator. When the hot egg white hit the air at the leak it dries in place and plugs it up.

[DannyV]

Get A Bottle of (Bars Leak),Read The Bottle Instructions and put Contents in The Radiator