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Old 04-06-2001, 08:08 PM
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dakota dakota is offline
Moof !
Join Date: Jul 2000
Location: Seattle WA USA
Posts: 469
In my opinion, the problem with the MB radiators (and it is quite common) is probably not with the type of coolant that is used, but more probably a factor of age of the radiator plastic, the torque used to tighten the clamp, and the width of the band on the clamp.

I suspect that if current owners of older plastic-necked radiators would change the clamp to a wider one than that which came with the car, and used caution when tightening the clamp, they would extend the life of the neck. The newer necks have a metal (brass?) bushing inside of the neck in the clamp area...I haven't heard of these types breaking.

My original radiator broke in the same location shortly after I purchased the car (car was 9 yrs old). I was not comfortable with just putting the hose back on the stub and driving for very long. I found a new OEM radiator (with the neck bushing) costs only about $245 (W124) and I sleep better with the peace of mind it gives me.
1992 300CE Sportline Sophie
1990 300E Emma - in the family
1979 240D Josephine - sold, but not forgotten
2004 Pacifica AWD
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