[b74heavy]

I have had the same thing. I am not really sure why this happens. I have no puddles or leaks. I think if I had a leak I would at least be able to smell it. My car was assembled in Austria not Germany so that might have something to do with it. I think what is happening is they are not bleeding the cooling system enough when they build the cars. This engine has a mechanical water pump, not an electrical one. So that might have something to do with it. I just bought a quart of anti-freeze and some distilled water at the grocery store and have topped it twice. A total of about 20 oz in 22,845 miles. Mixed 50/50 BMW antifreeze with distilled water. Not really an issue so far