Last month posted the fact that I needed new thermostat when engine light went on. After about 10 days light went on again. In addition inside of car still cold after 10-15 min. Brought car to dealer. BMW tech advisor happened to be there today, so they had him ride with them. Seems I need a new radiator. Now Im not a technician, but service advisor said that the flow thru the radiator is actually too fast. Problem is the radiator is on back order. Perhaps there is a problem not just with my car. 2008 528xi (delivered 1/26/08) Have a BMW loaner so Im OK for now