There is an old myth that replacing the fluid will destroy the clutch plates....over the years I had 2 transmission failures several months after having them serviced. Just a coincindence? IDK???
Not coincidence but what were the mileages on those 2 vehicles, high I suspect?
You can skip the stealer and go to a Kwik Lube place for a fraction of the price. I would do it at 86k if it were my vehicle, in fact I did. BUT......BUT you must keep up the fluid change. After 100k, if you let it go another 100k without swapping the fluid out, forget it.
When you change the atf, you are swapping out the old fluid for fresh fluid which changes the dynamics of the trans and pressures exerted and required for how it functions. In older trannys, tiny particles of metal shavings and such build up in the trans, and your trans gets accustomed to them. If you dump the atf on an older one, you rid the trans of what it has been accustomed to and expects for frictional properties and pressure. Thats why you get trans failure swapping out 150k-200k fluid.
B