Yes, I'm sorry for the long explanation but, I did want to point out there was at least one "objective", non-psychological-cultural (i.e. "change every 3000 miles") reason why in at least the case of post 2002 diesels, NA engines require more frequent changes than Euro engines.
It sounds like you and I are thinking similarly as far as EGR is concerned. As far as my 05 Unimog is concerned, the EGR cooler is sitting in my garage....
Charlie
It sounds like you and I are thinking similarly as far as EGR is concerned. As far as my 05 Unimog is concerned, the EGR cooler is sitting in my garage....
Charlie