Posted by johnd [71.246.81.198] on Saturday, January 14, 2012 at 12:58:23 :
In Reply to: Heater re-connect posted by Jerry in Idaho [69.59.83.175] on Friday, January 13, 2012 at 21:04:22 :
It doesn't matter. There isn't an inlet and outlet, in fact the coolant is only in the coil for a few seconds because it flows fast.
Air can't get trapped in it, because it is forced out by the water pump flow.
I wouldn't spend any time woorying about it.