[aussiblue]

I just had to replace the one in the NB I replaced about 15 years ago. The resin coating and cover worked - no corrosion and looked as good as new but dead as a dodo; so it seems they have a limited life even without corrosion.

Bad new was that while cleaning the new leaves out of the vent behind the fan speed controller I noticed the heater core appears to have coolant seepage and replacing that I think is a full dash out job.