Originally Posted by rzm3
No perceivable difference.
BMW lists the 'initial fill' at 7.8 liters. But when you do an oil change, not all the fluid drains out, so only about 5 liters/quarts can be added. I've performed this on two cars and had one checked by BMW to verify that the fluid level is correct.
Yes to your second question.
The oil change process is not detectable/traceable.
I thought I had read elsewhere that you had to run the DCT pump to drain more fluid and that was only something the dealer could do (but wouldn't since it's "lifetime"). Is this true or not necessary. I guess if the net yield was only 0.5L or less that I would skip, but do you know if that's needed or not?