C Coaster Joined 1 Feb 2005 Messages 491 Reaction score 12 Location Tyne and Wear Country 13 Sep 2008 #1 Just a general query, does the coolant in the expansion tank tend to just sit there, or does it circulate with the rest of the coolant?
Just a general query, does the coolant in the expansion tank tend to just sit there, or does it circulate with the rest of the coolant?
JohnD Joined 15 Nov 2005 Messages 96,123 Reaction score 8,005 Location South Country 13 Sep 2008 #2 it mostly sits there, but every time the engine heats up and cools down, some water travels out of the engine into the expansion, and back again, so over time it mixes.
it mostly sits there, but every time the engine heats up and cools down, some water travels out of the engine into the expansion, and back again, so over time it mixes.
