My son has a small crack in his radiator near the filler neck. It is in a curved section but does not include the filler neck joint. The truck is about ten years old. I'm wondering if this radiator should be replaced or repaired. If it should be repaired, should I braze a patch over it or drill the ends of the crack, grind the crack to a narrow slot and TIG-braze filler into it. I am familiar with brazing, etc., but the material is pretty thin, and I am wondering why this failure would occur in a non-stressed area.
20 years ago