Originally Posted by Drk280
My temp is spot on 100 degrees, it's a diesel but I was always under the impression it was meant to sit on 75. Any 320d guys have it on 100?
Remember it is NOT an engine coolant temperature (ECT) gauge, it is the engine oil temperature. So will be cooler than ECT when on short trips and higher than ECT, once the heat soak gets in the engine.
That is definitely designed to confuse more drivers.
BTW, a diesel will be around 88 - 92C ECT, in average use.