I am confused over a problem that just came up with my 740 T. Four days ago it was running as well as it ever has. I thought the heater core might be leaking so I looked around in there and all seemed fine. Started the car a few times and ran the heater and discovered no leaks. After a long day at w...

I own a 1991 740 turbo and except for the problem I am having currently which I feel will turn out to be something minor as the car was running extremely well four days ago, it has been a very reliable automobile for 309,000 miles. Still starts right up and would not hesitate to drive it for long di...