In Reply to: Bleeding the coolant system posted by SSW on September 04, 2001 at 19:41:32:
I've replaced the coolant in my M5 twice. Both times I found the system to be self-bleeding as told to me by Gary Derian. What this means is that I saw the air blowing out into the top input tube in the reservoir as I was filling coolant and eventually water came out.
For peace of mind, you can access the bleed screw near the firewall on the driver's side. It is near the + terminal I think and is actually on a hose. However, I found that this screw bled a bit before the return line on the reservoir so I had to shut it off and continue till the water came out of the reservoir return line. This proved to me that the reservoir return line is good enough.
I just changed out my heater valve. Do I need to bleed the coolant system? How do I do that? Is there a screw valve near the waterpump?