Description
This article is from the VW
Technical FAQ, by with numerous contributions by Jan
Vandenbrande others.
69 How often should I bleed my brakes and change the fluid?
A: Brake fluid should be changed AT LEAST every two years. Bleeding should be
done yearly and after an Autocross. Brake fluid absorbs water which
corrodes the lines. Bleeding regularly will significantly increase safety
and life of your brake components.
DOT 4 fluids have a higher boiling point than DOT 3 fluid but are also more
hydrophilic and therefore must be replaced more frequently than DOT 3.
 
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