Also, in comparing your temperature readings to other folks, please keep in mind that the old MB temperature gauges are not exactly scientific instruments.
It could be substantially off.
For example, the gauges on both my 617-engined cars jump up and down and change their reading. I presume this is due to an electrical connection or resistance somewhere.
So don't get too upset and replace the whole cooling system based on the MB gauge. Chances are the stupid gauge will read the exact same thing with all new components.
Ken300D