iGeorge

As I enter my first summer with the E550, I wanted to get people's feedback on how well the engine keeps cool. The reason I ask because my first Mercedes was a 190E with the 2.6 liter inline 6, and that car always had trouble keeping itself cool once it was about 75 degrees outside. Since then I always opted for the smaller engine, on the assumption they'd have an easier time keeping cool.

Jeffy

No trouble at all on the two 550s I have, they keep very cool.

Munich77

Ditto here - however the turbo engines stay warmer a lot longer.