Thank you both for the replies! Hopefully I can remote control this cure.
What gets me is the radiator was re-cored 2 years ago.
I knew I had seem this repair before.
I'll let you know how it goes.
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)