I am also skeptical of servicing my transmission fluid too Wayne. Mine is at 178,000+ miles now and never been done but almost ready to give it a shot now after seeing my fluids in the diffs and TC being really decent. The transmission works perfectly so now would be the time to do it rather than once it starts complaining.
I have big month coming with a Pirelli tire test in Homestead next week followed by the first Trans-Am race of 2020 the following week in Sebring and I get a couple of weeks after at home before heading back to Sebring for the IMSA 12 Hours of Sebring.
Those 2 weeks are already scheduled for OFHG and CCV on both the X5 and E46 so maybe right after the 12 Hour I may plan on the transmission service.
