Temporary radiator patch

[youry]

yet another problem with my X (what a surprise!). this time the coolant is leaking. at this point I have no idea where from. Freezing here in NY but tonight I will have to warm up the car, slide under and figure out what part is cracked. Once I figure what is wrong I will have to order the part online. The problem is that I need the car everyday and I'm looking for some kind of a glue/pasta/caulk that hardens in contact with air so I can temporary cover the crack. Its dripping once in a while so a temporary patch should work just enough to receive the needed part.
Any ideas?
Thanks