Cadillac Repair: 1995 Caillac De Ville Engine, blown head gaskets, caillac

Question
I was told that I have a blown gasket.  I only have 70,000 miles on the engine.  What possibly could have happened to the engine?

Answer
I have been diagnosing and repairing Cadillac's for close to 30 years and it is not unusual for a Cadillac engine to have blown head gaskets because Cadillac could never build a decent engine for in the Cadillac since 1979.

Probable cause: poor design.