Well disconnected hose from rad, cleaned off corrosion and fitted new seal lubricated with silican grease and reassembled. Thought it felt a lose fit when I pushed it back in place. It's leaking worse now 
Replacement seal from Peugeot was square section and same as one removed. I now regret not smearing area with instant gasket on assembly. I can only assume that I removed too much material in the groove that seal sits in when cleaning up and its not seating tightly. Might try and get O ring seal that's oversize next attempt. Any ideas?
You obviously know something from experience with this problem?

Replacement seal from Peugeot was square section and same as one removed. I now regret not smearing area with instant gasket on assembly. I can only assume that I removed too much material in the groove that seal sits in when cleaning up and its not seating tightly. Might try and get O ring seal that's oversize next attempt. Any ideas?
(06-11-2014, 09:16 PM)bashbarnard Wrote: Ok I seem to be a pikey then. Grab an o ring out the box of 700,091,726 I have in my workshop bang it in. Job done.
You obviously know something from experience with this problem?