Automatic tranny, I presume?
there is some relevancy to this statement ONLY IF THE TRANNY HAS HIGH MILEAGE.
Changing automatic transmission fluid on a somewhat high mileage car (over 60K) can cause problems for the tranny.
2011 Mineral White M3 ZCP
Paint Correct, Opticoat, Ventureshield, some CF, B&B exhaust, AFE Intake