I would like to know what the normal running temperature of the 450sl should be. I live in Los Angeles and even though it has been warm here, the car seems to be running hot. It seems to operate on the freeways at around 100 degrees on the temperture gauge and even warmer in the city. I flushed the system and added new coolant with very little result. The air coming in through the ventilation is also very warm. Also the secondary fan comes on at a high temperature. Is this normal? Should it come on sooner with the air conditioning on. Not that I've been using the air. I want to keep the engine cooler. Just a point of curiosity.