I’ve flushed my brakes three times now for track days. Don’t bleed the system completely. (I did this when replacing the brake lines to stainless) If you drain the system completely you will need to do the ABS bleed which means you will need a system like the MaxiCOM. If the brake pedal goes to the floor after bleeding, this means you need to do the ABS bleed, and you might have to do it a few times. It’s a two person job. If you just bleed the brakes like normal or use a pump, it flushes just fine. The Motive power brake bleeder works really well for this. Got it on Amazon cheap and it came with the correct cap for the 718.
