Just one more word on my THREE LETTER engine, I won't mention the name(but it starts with an A).  It started making making some noise after 3 mos. and with a 3 year unlimited milage warranty on it, I figured they would stand behind their junk.  Wrong!  They said I broke it in incorrectly and it was my fault.  I've been working on cars since I was 8 years old and rebuilt 123 metric & American engines, none failed, even my race motors.  When the head gasket blew, one of the head bolts broke off with just enough meat to massage it out.  The head looked like they surfaced it by dragging it on the sidewalk behind a tricycle.