Car is toast.
Kraft Nissan in Tallahassee just told me that the car is toast (engine is toast).
They said that they had replaced the head gasket and resealed it.
They blamed another company.
I checked out the other company, saw hardcopies of the service order, and the results.
I'm left with the following conclusions:
2005 Nissan Sentra engines don't last 10 years.
Kraft Nissan did a poor in their repair
What this tells me is that it is foolish to buy a Nissan in Tallahassee.
Bad cars and indifferent service.