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      05-17-2021, 02:33 PM   #3
technician117
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Drives: 2000 M5, 2001 M5, 2013 M5 6MT
Join Date: Jul 2018
Location: Buffalo

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1990 BMW M5  [0.00]
2000 BMW M5  [0.00]
2013 BMW M5  [0.00]
Quote:
Originally Posted by turboslut View Post
Has anyone performed a flush of this system? Do people have a way of completely draining system (as much as possible) or do people just suck out the reservoir and refill a few times over?
The cleanest, but longest method is as you described. Suck it down, fill it up, repeat. I flushed mine over the course of an oil change interval. Now I usually suck it down and top back off when doing an oil change to help keep it fresh.
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