Honestly, that part about the PCV system being way better now makes total sense. I read a whole forum thread where a guy did a teardown on a high mileage 3.5 and found the valves were actually pretty clean. He said the newer oil formulations and the way the engine runs just doesn't let the gunk build up like the old ones. It really seems like a solution for an older problem that doesn't exist anymore, at least not on these motors. Makes that catch can look like a shiny paperweight.