« Reply #15 on: June 03, 2012, 03:51:41 pm »
in the lower rad hose itself? IE, something in the rubber?
I used to live up north and there are recirculating heaters etc for cold winters, but I have never seen anything in the rubber lower rad hose in any DSM I have ever owned or worked on.
Some modern German cars have stuff like this, for coolant recirc but nothing in an older car comes to mind.
Toss up a pic?
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