i know i am in the wrong area for this but i figured at least one of you guys would know what to use ,i have a crack in one of the cores, i am looking at sodering the crack but i dont know what kind of rod to use, am i able to get it at a welding supply or a nparts store thanks guys

 

billy mays mighty mend it putty might work! but im sure a welding supply shop would have a brazing rod for aluminum, Or take it to a radiator repair shop and they will be able to do it correctly.

 

jbweld works wonders, no joke LOL ask my radiator how it knows

 

Not sure about the billy mays, but I've used the JB weld with great success. So I guess it's x2 for JBweld.

 

JB held my fuel bowl together for a few years.

 

A/C supply houses have alum brazing rods