I forget the name of the theory/study of the air squadron during WWII that had all these plane issues from maintenance. They stopped over maintaining things and reliability went wait up.I'm in agreement with @04UZJ100 . The tendency on enthusiasts forums is to over service and too much time on here may normalize what is an unnecessary practice. Maintenance induced issues is a very real thing too causing unnecessary headaches. Transmission flushes is in that wheelhouse. Professional machine based flushes was popular many years ago, yet they introduced so much liability and issues that it's not practiced anymore. Dropping the pan is up there too. The "filter" within the transmission is more a catch than the type that needs to be changed.
These trucks need fluids. That’s pretty much it. Folks that are dropping trans pans and even oil pans to replace “pick up tubes” absolutely boggles my mind.
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