I had my coolant changed (flushed?) by the dealership about three months ago. I am not sure if they "flushed" it, but I assume they do this for any coolant change?

Anyway, about two months afterwards i notice my car running warmer than usual. For my car, it usually runs around 80-85 degrees, even after a long or hard drive.

But nowadays it hovers in the 90-97 degree range.

Being concerned, I added some Redline Water Wetter to the existing coolant, but this did not seem to make a diff.

So now the last few days, I notice my engine fan kicking in more often nowadays.

Also, right after the first start of the day, my engine warms up to around 87 degrees not even after 5 minutes of driving.

I was wondering if anyone has had similar experience, and any ideas of how to correct this? Coolant change? Thermostat? Radiator?

I know this is supposed to be in the "typical" operating parameters per Mercedes Benz, but we all know how our cars are "supposed" to run, so any change in behaviour is easily seen by the owner.

Any thoughts, ideas is greatly appreciated.