Is your temp. gauge in Celsius or Fahrenheit ?
Many Mercedes are in Celsius so the ideal temp reading is around 80° C.
All my OM617's have 82° C thermostats and usually run right at 82° on the gauge .
It's been cool (high 30's / 40's ° F) in The L.A. Basin the last week or so , my temp. gauge rarely reached 80° C but the heater blows plenty hot so it's good .
If you're not sure , run your car 30 minutes or so then try to wrap your hand & fingers around the upper radiator hose close to the engine .
I can do this but most think it's too hot ~ if the hose or thermostat housing is uncomfortably hot after 30 minutes driving in winter , you're running just fine no matter what the gauge says .
-Nate
Mike Wrote :
What is the optimal temp for your cars? Mine (220D) has been really cold not even 100 sometimes.
Thanks in advance for any replies
Mike
Thanks in advance for any replies
Mike
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