Has Ford killed the diesel business with the crap 6.0.  I just sent two trucks back to Ford Motor credit due to faulty engines.  Have they fixed them in the 2008's?

Had a 2005 F250 which blew head gasket ( 86,000), a 207 F550 which would not start below 50 F. (30,000 miles)

Dealer would not do anything about the junk.

I have a 2001 7.4 I drive every day with 275,000 and never a problem.

Can I ever buy another Ford diesel with any confindence?