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Originally Posted by
Shifter
He asked me why I wanted that done and I expalined that brake fluid is hygroscopic - attracks water, he looked bemused and said we never change it. I just said please do it and also give me measurements of the wear down on the rotor, again he was bemused.
Mechnaics ain't mechanics anymore!
You are absolutely right, which is why VW have brake fluid listed for replacement every 2 years in all their service schedules (regardless of distance travelled). Sounds like he isn't following the official VW service schedules - I wonder what else he is not doing ?
If you really want to see his head spin, tell him to change the clutch fluid at your next service (if you have a manual gearbox) !
The clutch shares the fluid in the brake reservoir, but unless you drain the old fluid from the clutch line and clutch slave cylinder (via the bleed screw on the slave cylinder) it accumulates all sorts of nasties and ends up stuffing up the clutch slave cylinder. That ends up a very expensive fix, as the only way to get access to the slave cylinder itself is to remove the bell housing - what a great design for easy maintenance -NOT !
Much better to avoid the problem by bleeding the clutch line and clutch slave cylinder every two years at the same time as replacing the brake fluid (and confirm that they bleed the brake lines and calipers thoroughly to ensure all the old fluid is gone from them too).
Last edited by gregozedobe; 26-10-2009 at 10:09 PM.
2017 MY18 Golf R 7.5 Wolfsburg wagon (boring white) delivered 21 Sep 2017, 2008 Octavia vRS wagon 2.0 TFSI 6M (bright yellow), 2006 T5 Transporter van 2.5 TDI 6M (gone but not forgotten).
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