No, that is a good question that I really can't answer. I believe like most fluids over time it gets contaminated and acidic causing issues with the braking system. That's why I change it.This may be another dumb question, sorry, but how does moisture get into the fluid in the first place? I mean, isn't it a sealed system devoid of air?
And if so, we can't blame temperature changes for the moisture can we?
I can understand the need to change the fluid because of contaminants, corrosion perhaps etc, but it's the moisture thing that makes me wonder?
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