Interesting explanation. By this line of reasoning, it would be beneficial to change the fluid often early in the transmissions life but, at some unknown point, stop changing the fluid so the old fluid can extend the life of the nearly worn out transmission.
The theory is a scheduled transmission service helps minimize transmission wear depending on the lifespan of the actual fluid's integrity. Wear will always occur so the goal is to minimize that wear by changing the fluid. Something like an every 40k schedule. You don't have to stop and should be able to extend it to like 200k miles+ because the amount of protection provided by periodic fluid changes allows for less wear as compared to 100k miles with no fluid change at all which at that point is a crap shoot depending on the existing wear. If the wear isn't too bad then the 100k initial fluid change is good....but if there was significant wear then don't be surprised if the transmission fails shortly thereafter. I think a good (and serviced) transmission should last into 200k miles. We here folks all the time with 200k miles on original non-serviced transmissions. But then what type of transmission is it? Is it a real simple design? The Skyactiv transmission from what I read is complex and has multi-plates that act like a dual clutch transmission . More complex transmissions from what I read require servicing.
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