Hi all.
I am very new to these things(about 1 week) but if it helps here is my T-stat running too cool saga. My 300d was running around 60 deg C, and after some time on the highway it would creep up to 80. I changed the T-stat today-removed the old one, put new in and topped off fluid, all seems well in the short time I've driven, runs between 80-85. One thing I noticed is there was a bunch of crap around the inside edges of the housing white crusty stuff might have been from PO using nondistilled water, perhaps just age? I would guess that most of these old MB's could use a coolant flush. On a curious note I didnt test the new T-stat, and the old came out closed which surprised me so I tested the old T-stat by boiling it and while unscientific(I didnt suspend it just laid it on the bottom of the pan) the old one appeared to work fine.
Gregg
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