Hello gentlemen,

I have a simple question: which way does engine coolant flow? Does it enter the radiator through lower hose and exits it through upper hose and then goes through thermostat and then into the engine, then goes through engine block into water pump and then water pump pumps it into radiator? Is that a correct path?
I have a problem with overheating. Thermostat was removed and car still overheats and and it seems that there is no pressure in coolant system. No smoke from the exhaust and no coolant residue inside expansion tank and engine oil dipstick. Engine runs great. I suspect radiator being clogged.
Also what is the procedure of removing air from coolant system?

The car is 1996 S500 with 123k.

Thanks for any input.

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1999 ML430 Silver 135k ml
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