I have a 2001 Olds Intrigue with the 3.5 liter V6 and 95K miles. Over the last year it has developed an overheating problem that has gotten progressively worse with the coolant temperature pegging high and losing coolant after only 5-10 miles driven. The mechanic has replaced the thermostat, water pump, radiator core and hoses, and the head gaskets. The heater core (for climate control) was isolated and did not affect the overheating. The radiator fan seems to work correctly and there has been no damage to the front-end or underside that would affect airflow to the radiator. The water flow through the system and temperature readings were checked and believed to be accurate. I have heard that this car/engine has had this problem but no ultimate fix was identified. Do you have any advice for me or mechanic on additional areas to focus on?