A call from my GF's son on Halloween from 100 miles away in San Diego telling us that the "temperature spiked", and it overheated.
Played safe, and had it towed home.
Maybe its connected wiith him telling me with glee that he noticed that it has a steering shake at 85 mph...
I lent it him cos its slow, and gets great gas mileage thinking he would respect it...
If it was my boy I would have wiped the grin off his face...

Anyway, an investigation showed a coolant stream from the waterpump weep hole, and also a slight drip from the side of the radiator.
So, new Nissans radiator, a new water pump, gasket, thermostat, Zerex Coolant and Distilled water are on hand now.
The bill for the parts is close to $400, so the GF is paying...

Ever since I have owned this 190D I noticed that the temp gauge is very odd. It takes a long time to reach 80degC and it seems to follow the ambient temp rather than stay constant. I think the Thermostat is either stuck open or missing.

While I have it in my charge I am gonna change the oil and fuel filters and hope that the overheating didnt damage anything else.

Anyone have any input or suggestions on the revamp?
Should I backflush the heater core or replace anything else?

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2009 Mercedes ML320 Bluetec