240DieselDog,

Run without the thermostst in the summer? Show me where it says that in the MB manual and I will do it. Otherwise I will leave my themostat where it belongs, in the engine. Once the engine temp is above the opening of a properly functioning thermostat, the thermostat has little effect on the engine temperature.

For summer overheating, I would take the radiator to a radiator shop for flow testing and profesional cleaning.

Although running at temperatures above 100C may seem hot to us, its not hot to an engine. They are designed to run hot. As long as the coolant doesn't boil, an engine won't be damaged buy running hot. Look where the red mark is on the temperature gage. As long as temp stays below red mark in hot weather or up long hills, engine won't be damaged.



P E H