Alfa had the idea of thread locking these connectors on, I don't know of anyone who has managed to remove the oil cooler pipes from the original oil cooler without damaging it.
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I have :lol:
I removed the entire cooler from the car, disconnecting the pipes at the engine end.
Then placed the cooler in a vice, protected with strips of wood. Then gently removed the bolts with a half turn forward and quarter turn back...like tapping a thread.
The problem is steel and aluminium fusing, so it is hard work...I still needed to clean the threads up afterwards and parts had disappeared, but it survived!
wrinx