BMW: Radiator Leak on 93 740 (E32)

I am not sure I would put my faith in sealant for a plastic radiator. My
idea is that the plastic is rotting, and you should get a new radiator
before it fails entirely.

For the record, I failed to notice that my radiator was seeping, and when it
suffered a catastrophic failure on a mountain road with no shoulders and I
had to drive for about a mile before I could get off the pavement in a spot
large enough for a tow truck to fit into, I had done serious and expensive
damage to the cylinder head.

You should replace that radiator while you can still drive, and avoid the
costly mistake I made.





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