Radiator leaking at neck. Can I just solder it like I would copper pipes?

I found a radiator on CL today and fits perfect. 3 core. fits my rubbers and A.T. lines in the right place. The only leaks I found is one at the neck. Can I just sandpaper the area, heat it up with propane torch, put a dab of flux an solder it? It is a tiny tiny leak. Please advise.

Thanks

 

You can. just dont get it to hot. slow and easy on the heat till it sucks in the solder.

 

I have. I had the overflow tube break off and likewise soldered a new one into place.

 

what kind of solder and flux should I use? propane torch ok? also have electric solder gun.

 

Propane is fine. Solder just as you would any copper pipe. The cleaner the better.

 

Worked perfect. Thanks Briz & SB.