Hello,
There is the "If it ain't broke, don't fix it" line of thought.
But I have an 86 that had water pump bearing start squeeling like a stuck pig. Pulled the radiator during the replacement of the pump and found a crack in a seam leaking when running water through it. They get pretty fragile after 20 years or so and it must have split when it was being removed or handled. So you at least may want to start looking around for a replacement to have in reserve.
I got really lucky and found a 84 Turbo in the Pick Ur Parts with a real brass radiator in nice condition. Had to do a little plumbing on the connectors but made for a nice replacement part. At least you can have that one rebuilt. The plastic ones are throw aways.
Regards,
Paul
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