I have developed a leak on my half size aluminum rad from over time vibration from my fan. I have a slim fan and the plastic studs that go through the fins, well the washers behind one nut has worn 2 very small splits on the face of 2 tubes that hold the coolant.

I have to fix this ASAP, I don't have time to take it to a rad repair shop, if I solder the cracks shut will that work?
Or is there anything better to seal it with?

 

there is a radiator leak fixer comes in a tube you can get at pretty much any regular auto shop. should do the job for the time being, although it may be able to hold for longer...

 

do not put that leak fixer in you radiator it can mess up your water pump or worse and no you can not solder the holes if u still have the stock radiator put that in or replace it with a new one and find a different way to mount your fan i suggest going back to oem i run a full size oem radiator with one oem fan the car runs so cool the fans only kick on if the car is staying still