The life of a Magnum (and 46RE question)

I agree, I've had 3 radiators on newer cars leak where the plastic tank crimps to the core. Enough to run the rad really low but not enough to drip on the ground. The radiator in the Duster was only replaced because the core had disintegrated from corrosion and insect impact....ugh, love bugs
We've done stuff newer than '06- a year or two ago. My 37 year old radiator was beat about every way you could think- I think it'd had a bird or two hit it in my time but still cooled and still held water. But the aftermarket replacement for my truck started leaking after less than 7 years.