Quote:
Originally Posted by mplafleur
I've disconnected the upper hose and looked at the output flow on the SDL at idle (and no thermostat), it is little more than a trickle.
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Why should this be surprising? Without a thermostat, most of the coolant goes down the bypass and back to the pump (as if you had a cold engine).
The only way to ensure that all the flow goes to the radiator is to install a thermostat that is always "open"...........meaning the passage to the radiator is open and the passage to the bypass is closed.