Hey All,
I was wondering what the ideal cruising temperature is for a 1993 400E. I only started driving this car in the fall last year, and it stayed relatively mild. The car usually held around 80-85 degrees per the gauge. Now that it is summer and I am using the air condition I am noticing big fluctuations in the temperature. I don't know what the unlabled tab in between 80 and 120 is(100 I think), but that is the hottest it has gotten. If this is normal, please let me know, but to me it feels like it is getting too hot. When it does get this hot I normally turn on the heat to bring down the temperature, and it normally brings it back to around 85-90 degrees. I recently did an oil change and all of my fluids were at good levels. Does anyone know of some other things I could look into as to why the car would be getting so hot? Or is 100 degrees an acceptable temperature for this car to be running at in the summer with the AC on?