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      11-12-2012, 08:55 AM   #21
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Drives: 335i Cabrio
Join Date: Sep 2012
Location: Atlanta

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Originally Posted by 3er BMW View Post
As mentioned brake fluid is hygroscopic [...] going down a mountain with long periods of brake
All very true, but none is relevant to my question. Does testing the water content in one place such as the master cylinder reservoir validly tell you the condition of the fluid throughout the system?

Originally Posted by avocet View Post
I will change fluid every year. Just use a turkey baster and suck what I can out out of the reservoir. Keeps the fluid fresh until a brake pad service. Then it gets a flush.
I don't understand this; how does changing the master cylinder reservoir fluid freshen the fluid in the lilnes and calipers?
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