Guy's while chasing down a coolant issue on Monday, I did a pressure test of the system and brought it up to 16psi about equal to what my cap is rated at. At that point, I noticed that there was a very slight leak from the bottom corner of the rad. Not much, but after blowing it out with some compressed air, the leak appears to be coming from inside the rad, not from one of the outside channels. I can't see any leakage, but a drop or two every 10-15 seconds happens. Unpressurized, there is no dripping, but today, feeling the bottom of the rad, I did find that the bottom was wet, but nothing on the floor.
Can aluminum radiators be repaired, or should I put my order in at Caterham UK tomorrow morning? I'm assuming that those radiator sealer treatments in a can are for temp fixes only correct?
Tom