Originally Posted by Astro14
Originally Posted by demarpaint
I stick with my 30K pan drops, filter changes and line exchanges. Using only mfg. approved fluids.
Me too.
My BIL is a powertrain engineer, who has worked for Ford, GM, Chrysler and Borg-Warner. Among engineers, sealed for life is considered to be much lower risk. Many of the failed transmissions that they get back for analysis contain shop rag lint, which has contaminated passageways and solenoids. Mechanics introduce dirt and kill transmissions is the thinking among engineers.
Perhaps careless ones do.
But I will stick with changing fluid regularly.
I guess with all the horror stories we read here with mechanics screwing up jobs, a simple oil change being grossly overfilled, etc. the engineers might be onto something. I mean if something as simple as an oil change gets screwed up imagine what can happen to a transmission service......
One has to determine the definition of "life" and if a competition person is servicing the unit or not. I'll continue to service mine, and I will be willing to bet in doing so it will outlast a sealed for life unit, had I played along and left it alone.