Two questions. Did the dealer fix the leak? Has the car run hot since the thermostate was replaced? Actually most thermostats fail because the engine ran hot. I have seen many cases where the thermostat was replaced because the engine ran hot, then the real problem was found and the engine still ran hot because the thermostat was damaged when it ran hot before the real problem was repaired. If you can understand the above sentence, your IQ must be 200. In other words, if a thermostate is subjected to a temperature above 120 deg c, then it should be replaced.

Paul

__________________
84 500 SEL (307,xxx miles)