my OE 3-row nippon denso radiator is showing signs of leakage at the top end tank. there are green powdery spots that seem like more than just copper corrosion. and i see a pin hole that seeps EVER so slightly. the system has a compromise because the temp gauge was riding high today. the appearance of the pinhole jives with this temp issue and associated coolant loss. the truck doesn't eat coolant, it's losing it.

so...i did find a radiator shop about 30 mins away, as the local go-to shop has closed due to retirement. think it's worth getting this thing fixed or should i just replace? the 3-row core itself looks good - i'm sure they will rod it, but the green along the top seams and the pinhole tell me that it needs something NOW. to me, it seems like a robust design. i've searched and it seems people sweat the capability of the stockers.