Why do we have to flush out the brake fluid every two years, but not required in a car?
opcorn:
I think if you look closely enough, you'll find that regular brake system inspections & testing, which includes checking that the fluid is up to the task/doesn't have too much moisture in it,
really IS required on a car, altho maybe you & many other 'car users' aren't quite so aware of that requirement! :lecturef_smilie:
But basically, because all brake fluid is hygroscopic and there's significantly less total fluid volume in a bike's braking system than there is in a car, a bike is far more likely to get its brake fluid hot enough for dodgy fluid to cause braking issues &/or failure, so
any moisture in the fluid has a far greater adverse impact a whole lot sooner, so it's given a higher profile in the service schedule. And as mentioned, if you look at the service schedule on your car closely, you'll very likely find that at least testing & flushing the brake fluid if warranted
is included at some stage, even if 'flushing regularly' is not actually specified but rather just implied; besides which, fewer people tend to do
all their own maintenance on their cars than there are who do all that on their bikes, so the 'more critical' need for regular flushing on a bike tends to be given a higher profile in the bike's maintenance schedule, possibly simply as a CYA exercise on behalf of the manufacturer, but even so....
