My Dad never got more than about 250K miles out of those engines (either a head gasket or drinking oil got 'em), and the transmissions were swapped every 80K miles or so when they began slipping bad enough that WOT upshifts wouldn't happen (see: Headgastket got 'em...). I have no idea what people see in the Crown Vic aside from the full length frame, it's got a terrible powertrain for longevity/durability, IME (My Dad and Grandpa put about 2 million miles on the Panther platform, I'd estimate). This was literally the car that turned me to GM. It was also my first car, a P71 interceptor, which I wish I had back, if only for the memories of working on it with my Grandpa, but nostalgia aside, meh.