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Old 03-17-2002, 02:33 PM
loubapache loubapache is offline
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Join Date: Jul 2001
Location: Western Michigan
Posts: 1,080

I read a while ago that replacing the fluid in the reservoir twice a year is all that is necessarily to keep the brake fluid in the entire system fresh.

Yes, the fluid does not circulate as engine oil, but apparently there is enough diffusion and fluid motion through braking for the new and old fluids to mix. Then if one replaces frequently enough (twice a year), the fluid remains fresh.
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