What type of solder and flux for a radiator?

[375instroke]

I see so many types just for radiators.  Perhaps different plasticities while working.  I'm soldering some tubes.  What about the brackets to the tanks?  Is there a general solder formula for radiators?  What about the flux?

[Q-ship]

I've always used standard pluming solder for repairs and have never had a failure yet.

[Manifold]

I reattached a bracket end using standard solid core plumbing solder and flux. Held fine.

[bricklayer]

i know from factory it was solder i guess. but i fixed mine with a 2 part epxoy, sanded it painted it and it looks great just though i share that not not trying to revent the wheel i just didn't have anything else to fix it with, for what it worth  tom