Several online sources (auto parts store , garages ) have recommended flushing and replacing brake fluid at intervals of 24 months / 24000 miles citing fluid contamination andmoisture retention as primary reasons....and to purge any air as secondary reasons, unless the system has been opened.
I also looked at the Owners manual for two different GM vehicles, a Chiltons manual and a factory service guide. None of these specified periodic brake system flushing although the service guide gave some very general guidelines.
However, not a whole lot of shops advertise the need for this procedure... If you take your car into a Jiffy Lube (just for example), they will replace oil, filters, belts, transmission fluid, but never say a word about brake fluid. If it was that necessary and part of a recommended service program, it seems to me that a lot more tune and lube places would be advertising this service.
So what is the truth here ??? Do mechanics and engineers see a need for regular, planned brake fluid changes ?? Is this marketing hype?? Is the difference somewhere in the middle ??
Appreciate your thoughts and wisdom on this matter !!
Thanks in advance !!
Peter
ps.... raybestos has a brake system learning center at