I was wondering if anyone has had the same kind of leak from their radiator as me. Symptoms are noticeable coolant loss after a fairly long trip, no leaks at any hose points or from the expansion tank, but a tiny drip from the bottom right corner (as you look at the car from the front).
It doesn't seem to leak during driving, but when cooling down.
I'm pretty sure the radiator is original so 10+ years old now.

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1993 320TE M104
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past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
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"music and women I cannot but give way to, whatever my business" -Pepys

As you may have read the upper plastic hose connection on these radiators become brittle and break off. Look closely for white residue below the upper hose connection ... which will indicate that it's leaking. You might want to carefully remove the upper hose and inspect the plastic connector for cracks. I suspect that you'll be buying a new radiator soon. Be sure to buy a Behr ... OEM.

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Fred Hoelzle

thanks for the reply. I have already checked all the hose connections and surrounding ares, there is no white stuff suggesting a leak there. I also have the metal re-inforced neck version of the radiator.

__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys