[cas951]

I think most of us treat various cars differently for this topic. My Porsches yes I do flush every few years but my daily drivers are treated differently.
My Lexus sedan which I've owned since new (2001) now has 117k and my minivan which I use for long trips now has 140k (2003) both have original fluid. Yes I'm getting around to doing them but I don't treat them like my Porsches. I've owned other cars that I drive towards 200k miles and never flushed the fluids and never had a problem.

General maintenance I do them routinely but my parts are from your local autozone or Pep Boys for my daily drivers. My Porsches I tend to use OEM or Pelican or other reputable Porsche parts suppliers.