I disagree, having owned several Klima I equipped cars, all were hot runners until I learned to properly burp them .

To each their own, just the thought of air in the water jacket makes me cringe, maybe because I live in the Desert.....

If the Evil Servo is dead, by pass it, I use a late 1970's vintage Dodge manual hot water valve as it's cheap and has the correct mis matching size hose barbs on it .

One simple way to avoid any air in the cooling system is to drill a tiny hole in the flat flange of the thermostat .

I don't think this is good policy but many newer engines come this way from the factory .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better