Brake fluid color - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 5 (permalink) Old 07-01-2012, 10:19 PM Thread Starter
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Brake fluid color

I changed the brake fluid today. The brake fluid was so bad (dark brown), I couldn't get the sight glass of the reservoir totally clean even with a tooth brush. I got the fluid running from brown to yellow, but couldn't get any better than that, and quit trying. Is that good enough? BTW, Brake performance improved significantly.

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post #2 of 5 (permalink) Old 07-02-2012, 02:39 AM
Crap, I WAS in 5th gear.
 
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For now it is. Flush it again in a couple of weeks.
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post #3 of 5 (permalink) Old 07-02-2012, 11:55 AM
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+1 on the flush soon again. As for the sight glass, it's plastic I think, once it gets really stained it's probably not going to ever totally clear up again.

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post #4 of 5 (permalink) Old 07-02-2012, 05:54 PM
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Brake fluid is something that should be changed every couple of years. When it isn't changed, it absorbs moisture... causing corrosion. It also gets thick, and doesn't pump as easily. DOT 4 is the synthetic version of DOT 3, and is what is recommended for these bikes. Do NOT use DOT 5 fluid, as it is silicone based, and will NOT mix with DOT 3 or 4.

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post #5 of 5 (permalink) Old 07-02-2012, 07:47 PM Thread Starter
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thanks for the info, all. the fluid, in part, had become thick and gel-like. I'm not so sure the sight glass is stained as much as there is some brown gel in places at the bottom of the glass I just couldn't reach. As an update, I tied the brake lever back (used a strap of velcro) and let it sit overnight. Went on a 100 mile ride today, and the brake is great.

Redbike/Johnny Wannabe
My mind says sport bike, my body says cruiser.
Ö..my mind won: 2006 Z750S.
Lowered
Genmar handle bar risers
Buell mirrors
ZG DB screen
K+N air filter
LED tail lights and turn signals
Hugger
Givi hard bags
Sliders
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