W211 engine block drain plug
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Last edited by mumian; Mar 15, 2014 at 11:52 AM.
If you are thinking there's a relief valve for the radiator then that's another issue.
I just changed the water pump on my 211 and believe me theres no drain plug. Like on the oil pan.
You pop the bottom hose and drain it into a suitable container. Its messy and not fun but it will come out in a hurry.
http://www.benzworld.org/forums/w163...-my-ml320.html
but I am having a hard time to find it.


Rememer to get rid of all the air in the engine block after the refilling.
I got cavitation of some aluminum parts and a burst hose on my other car. Almost every coolant service (even by the dealer) has left air in the system.
Last edited by dave2001auto; Mar 17, 2014 at 12:35 AM.
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