After changing my radiator due to the neck breaking, and replacing the coolant with mb coolant. My car runs at 85-90 maximum in 100-110 degree weather.
Normally in anything else it is usually around 80-85.
And I have the AC on all the time. it never goes off at all.
I'm in Los Angeles, and in stop go I have yet to see my car break 90 at all in the heat.
With the current temps, my car is at 80-85 as always.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.