Time to start pricing radiator...just in case.

crazy me , I tried the "fix the plastic tank + aluminum tabs route on a W126"

Aluminum after many expansions and contractions (the tabs that hold the
PLASTIC tanks onto the aluminum radiator core) suffer from crystalization.

And, what German engineer was smoking What, when He (I know no woman
would come up with such a Detroit idea) decided to machine plastic for
metal A.T.F. fittings?????????????????????????????????????????????????

[I bought an aftermarket old stlye COPPER radiator for the W126!]