I need some brainstorming, folks.

Friday, the Cougar began to run rough, especially on acceleration from a
stop.  It also showed nothing on the temp. gauge and made no heat.  When I
checked under the hood the overflow tank was dry.  There was pressure in the
system even tho the car was cold.  After refilling the tank, (radiator was
OK) I found bubbles coming up every time I goosed the throttle even when
cold.  Lots of bubbles.  The oil was perfect, no milkshake and the level was
not above where it belonged.  I thought, uh-oh, head gasket.

Saturday morning it went to the local dealer.  I explained my suspicion and
the service writer made me describe symptoms.  She said they 'might' be able
to look at it in a day or two.

Today I got a call, the mechanic had filled the coolant and bled the system,
then test drove it.  Now he wants to replace the thermostat to make heat.  I
asked if they had checked for exhaust gas in the coolant and they acted like
I was speaking gibberish.

I found out later that this dealer had been forced to sell and had let
business die off.  They have 2 mechanics for a 20 bay shop.

I think they have no clue and might damage the car with further putzing.  I
was quite clear about my suspicions and I feel ignored.

Should I be worried?  Maybe even very afraid?  I am ready to haul it out of
there ASAP.

What say you guys?

Thanks!!

PoD