Brake fluid discolored...when to change?? - K-Bikes.com - Excellence in Motion
 
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post #1 of 7 (permalink) Old Sep 24th, 2006, 7:30 am Thread Starter
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Question Brake fluid discolored...when to change??

The brake fluid in the bake brake reservoir is still translucent but looks 3+ dirty (scale of 1 to 10).

Should it be changed now or wait until the Spring?

Mileage will not be that great between now and then, but would corrosion of the lines be the main concern?

Bike will be in shop for 36,000 routine maintenance this coming Wednesday.
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post #2 of 7 (permalink) Old Sep 24th, 2006, 11:16 am
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You shouldn't judge the quality of fluid just by its color at the reservoir. This is not representative of what the fluid in the system is, because the reservoir fluid is pretty dormant. Often I've thought the rubber sealing gasket under the lid cover causes some of it.

If you have a friendly shop that can do a water retention test, that's better. But most just stick to swapping out the fluid after a certain time in the system. The color can darken with plastic and rubber coming from hoses and seals etc. Corrosion is a slow long term thing, more rapid in summer when its hotter. Vapour lock under hard braking if the rotors are allowed to glow red hot can give 'brake fade' due to any absorbed water turning to vapour.

How old is the bike, does it still have oem rubber lines throughout, when do you think the fluid was last replaced, do you ride it like a banshee kamikazi rider fully loaded two up with bags?

Probably nobody will tell you not to do something on a braking system - they are your life and you should take ownership for what you feel comfortable with, but I've not personally heard of a system fail catastrophically, if a fluid change was left a few months. I'll bet some riders out there don't even know it should be replaced - so you passed the first step!



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post #3 of 7 (permalink) Old Sep 26th, 2006, 10:37 am
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Quote:
Originally Posted by Larry
The brake fluid in the bake brake reservoir is still translucent but looks 3+ dirty (scale of 1 to 10).

Should it be changed now or wait until the Spring?
How long ago was it changed previously?

Black 2002 K1200RS - "The Beast" (over 100k miles)
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post #4 of 7 (permalink) Old Sep 26th, 2006, 10:41 am Thread Starter
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Quote:
Originally Posted by carnadero
How long ago was it changed previously?
Must be over 1 year.
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post #5 of 7 (permalink) Old Sep 26th, 2006, 11:37 am
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Quote:
Originally Posted by Larry
Must be over 1 year.
I'd say it's up to you - doing it now or waiting until spring is your choice. If the interval has been longer, like say, two years and plus, then doing it now would be a good move. No use leaving really old fluid in there. :p

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post #6 of 7 (permalink) Old Oct 25th, 2006, 3:22 pm
 
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fliuds

i like to change mine before i put the bike up for winter, especially brake fluid bscause it absorbs moisture
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post #7 of 7 (permalink) Old Oct 25th, 2006, 5:43 pm
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Changing it once per year is a good thing to do....why not?

'04 GT...Orient Blue...Staintune...Ohlins...Power Commander
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