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can brake fluid be reused?

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Old Mar 2, 2006 | 11:32 AM
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dropped like its hot's Avatar
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Default can brake fluid be reused?

after its been bleed?
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Old Mar 2, 2006 | 11:42 AM
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Runnerdown's Avatar
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Default Re: can brake fluid be reused? (dropped like its hot)

NO. do not reuse brake fluid. please tell me you are in a bind and not just trying to be cheap!
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Old Mar 2, 2006 | 02:04 PM
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Default Re: can brake fluid be reused? (dropped like its hot)

Brake fluid is cheap compared to brake system component costs. There is too much of a risk of introducing dirt into the fluid while bleeding to warrant reusing it. Besides, brake fluid is hygroscopic (or os it hydroscopic?). It absorbs moisture. That's why Honda recomends a brake fluid flush/fill every 3 years.
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Old Mar 2, 2006 | 04:48 PM
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dropped like its hot's Avatar
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Default Re: can brake fluid be reused? (Perfectionist)

yes thanks for the warnings, i quickly realized after bleeding the first line that it looks nothing like the new stuff!!

i finally finished working on the car and took it out for a ride but the brakes feel mush still. i bled them passenger rear, driver front, driver rear, passenger front on a 96 gsr. what could be the problem should i try bleeding them again tomorrow?
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Old Mar 2, 2006 | 05:12 PM
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Default Re: can brake fluid be reused? (dropped like its hot)

Did you open the system at some point and get air in the lines?
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Old Mar 2, 2006 | 05:42 PM
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Default Re: can brake fluid be reused? (Perfectionist)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Perfectionist &raquo;</TD></TR><TR><TD CLASS="quote"> Besides, brake fluid is hygroscopic (or os it hydroscopic?). It absorbs moisture. </TD></TR></TABLE>

Hygroscopic was correct. Hydrophilic could also be used I think.

Hygroscopic:Readily absorbing moisture, as from the atmosphere.
hydroscopic:An optical device used for viewing objects far below the surface of water.
Hydrophilic:Having an affinity for water; readily absorbing or dissolving in water.

And ya, never reuse the stuff. You shouldn't even use the stuff out of an already opened container.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Perfectionist &raquo;</TD></TR><TR><TD CLASS="quote">Brake fluid is cheap compared to brake system component costs. </TD></TR></TABLE>

Indeed. Even cheaper than insurance hikes when you slam into someone.


Modified by old man neri at 1:01 AM 3/3/2006
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Old Mar 2, 2006 | 08:59 PM
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Default Re: can brake fluid be reused? (dropped like its hot)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dropped like its hot &raquo;</TD></TR><TR><TD CLASS="quote">
i finally finished working on the car and took it out for a ride but the brakes feel mush still. i bled them passenger rear, driver front, driver rear, passenger front on a 96 gsr. what could be the problem should i try bleeding them again tomorrow?</TD></TR></TABLE>

The order in which you bleed the brakes is probably the least of your worries. There are other things you could be doing wrong that could cause a mushy pedal.

When I bleed the brakes.
I have my helper build pressure.
Then I would open and reclose the bleeder quickly before the brake pedal bottoms out.
Repeat untill no bubbles squirt out.

If you have the bleeder open and your helper takes their foot off of the pedal it will suck air back into the system.
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Old Mar 3, 2006 | 06:55 AM
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dropped like its hot's Avatar
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Default Re: can brake fluid be reused? (_BEN_)

yes i had someone push the pedal until firm. then i open the valve let it out till she said the pedal was to the floor then closed back up and repeated the sequence until i felt there was no air comming out of the valve.

by firm what do you guys mean that u cant push the pedal down at all or is it just tough to go down?
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Old Mar 3, 2006 | 05:48 PM
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Default Re: can brake fluid be reused? (dropped like its hot)

There are other things too that can cause a mushy pedal.

ie. new pands on old rotors that were not resurfaced.
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