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      06-12-2020, 09:09 AM   #4
MarcoZandrini
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Drives: 2018 M240i
Join Date: Jun 2017
Location: Virginia

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The fill is done in 3 steps. The first step is when the transmission is empty and you're replacing the fluid and the filter. The transmission is run through the gears as shown. The second fill is then performed. Why? Running the transmission through the gears gets the new fluid properly distributed throughout the transmission. Then the car is driven for about 10 miles and the fluid level rechecked and topped off as required. It's complicated but hey, it's a modern car.
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