Coolant Flush
Junior Member
Joined: Feb 2019
Posts: 38
Likes: 5
From: Norwich, Ct.
C320 wagon 325XI wagon
I don't know..but if you can loosen the lower radiator hose clamp..pull the radiator hose off, you will release most all of the old coolant out of the system. The residual remaining undrained, maybe 5%. Only replace coolant known to be compatible aluminum friendly...most all are today. I have never seen a dedicated coolant drain plug on any MB engine blocks...
MBWorld Fanatic!
Joined: Dec 2003
Posts: 3,275
Likes: 236
From: BC, Canada
2003 C230K Coupe Orion Blue
What's wrong with a standard flush? The bottom of the radiator (red cap) is already the lowest point of the car. Not sure exactly how much is in the car (somewhere around 7-8L I hear?) but I was able to remove 5-6L this way, as measured by milk jugs.
Unscrew the expansion tank cap to drain the coolant much quicker.
Unscrew the expansion tank cap to drain the coolant much quicker.
