honda shadow with coolant leak

[kmoore]

ok i noticed when i was riding my bike home from work yesterday morning that i had a coolant leak so i got to looking and best i can tell its coming from bout half up the radiator. so my question is how finiky is the cooling system on a bike?? is it safe to use a bottle of bars leaks in a bike or will it gum things up? other than replacing the radiator what other options do i have???