I just replaced radiator of my '98 dodge Ram 1500. Removed every hoses and tubes from old raidator then attached them to new one.
But they are having transmission oil leak at oil cooler. leaking oil arises at connector on lower radiator and oil cooler tube. It maybe loose connect. I have tried to remove the oil cooler tube from the connector on lower radiator to re-connet it properly, but I couldn't. Beacuse there are some small metal nails inside the tube that prevent falling off both the tube and oil cooler connector at radiator side.
Dose anyone know how to disconnect tube and connector?

In case, I did cut connector pipe on the old radiator when I replaced one, then I got new oil cooler tube.