Hmmm. When I was looking up at the attach points on the end tank of the radiator/cooler, the end of the hardlines looked like those banjo type connectors, I thought they would come out/unattach like they do at the transmission housing. I haven't tried anything with the ends at the tank because they are in such a crappy location to get too. It's the hardlines attached to the radiator that are rustiest. Shoot.