In trying to follow the cooling system flush procedures, I know that opening the VENT PLUG is important to get the air out of the system when refilling.
My problem is that I absolutely cannot get the Vent plug unfrozen. I've tried liguid wrench, penetrating oils to no avail. When I put some muscle into it, the whole vent plug assembly rotates. So I was wondering if I can (or should) just screw the whole vent plug assembly off of the engine block to try soaking it?
I called parts at my local Ford dealer here in San Francisco ([email protected]
Ford) and the guy said he had never even heard of a vent plug on a 3.8 engine. DUH!
If I don't remove the whole vent plug assembly, can I just remove the attached hose to vent the system?
Also, should I definitely plan on replacing the thermostat? Motorcraft, or Stant better than another? Gaskets always needed too?
I would like to try to flush the system myself, since the last time I took it into the local radiator shop, they flushed it, strained the coolant, put in some new additivies and that's it.
Any suggestions would be much appreciated.