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Old 09-19-2017, 01:47 PM   #21
The Magician
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Originally Posted by adouglas View Post
Thanks. Was referring specifically to the "fresh" fluid in a previously opened bottle rather than what's in the bike, but the context is clear.
I had bought a couple bottles of EBC fluid from STG maybe a year or so ago. Maybe 1.5 years. I used it in my R6, even though I noticed it was darker than it should have been (in an unopened container). One run through the gap and I got squishy brakes, had to bleed them before turning around. Sucked.
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Old 09-19-2017, 01:48 PM   #22
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So, just for giggles I took some fresh clear fluid and put it in a glass votive candle holder. (Don't tell my wife!) I then added an equal amount of water. I was hoping for a color change, instead it just got cloudy/milky. I'm going to let it sit overnight to see if anything happens.

Short form, color can point out old fluid, but lack of color may not mean the fluid is good.
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Old 09-19-2017, 01:51 PM   #23
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So, just for giggles I took some fresh clear fluid and put it in a glass votive candle holder. (Don't tell my wife!) I then added an equal amount of water. I was hoping for a color change, instead it just got cloudy/milky. I'm going to let it sit overnight to see if anything happens.

Short form, color can point out old fluid, but lack of color may not mean the fluid is good.
Let me know when you get to the next level and start boiling it in her Le Creuset pans. I'm interesting in the results and following dateline episode.
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Old 09-19-2017, 02:56 PM   #24
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Whelp, thanks for reminding me that I have yet ANOTHER thing to do this week.

According to Tilton, color is not always an indicator of fluid condition:
http://tiltonracing.com/brake-fluid-...e-and-go-fast/
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Old 09-19-2017, 02:58 PM   #25
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Slightly off-topic: I got a motion pro bleeder and used it to flush my lines yesterday. Pretty Easy to use. Don't know how I ever did without it.

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Old 09-19-2017, 05:19 PM   #26
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I just use gravity, make sure the line goes UP a bit from the bleeder before looping down into the catch bottle, maintain a head of fluid in the line and you won't suck air.
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Old 09-21-2017, 05:25 AM   #27
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I just use gravity, make sure the line goes UP a bit from the bleeder before looping down into the catch bottle, maintain a head of fluid in the line and you won't suck air.
I use pretty much the same process. Had to replace my calipers last week and used the same process. Bought a syringe to try the "push" method and didn't really see any noticeable improvement. Guess it would only help if you really had a stubborn bubble (which shouldn't happen if the reservoir is the highest point in your system).

Never really appreciated the brake fluid change thing until my last track day at Palmer in blue group. Was really cooking the brakes and had the lever get mushy on me. Pitted, let the bike cool down and it was back to normal. Interesting part was the fluid wasn't even terribly dark but it was about a year and a half old. I think part of the darkening process is actually brought about by UV exposure (at least that's what I've been told before).
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Old 09-21-2017, 06:27 AM   #28
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My only failed brake experience seems to be the opposite of everyone else's. Fluid was several years old (factory filled iirc). Booking down the back straight at Spokane on the 919. Hit the brakes approaching turn ?11? and despite a nice solid lever, very little happened. First time I can remember using my back brake at a track day. Definitely a hairy moment. Of course at that point I had just passed pit out so I was committed to another lap. By the time I got back out to the front straight my brakes were back and I finished the session. Only guess is the pads glazed and were subsequently rescuffed but I never really found out for sure.

Of course, looking back at it now it's equally possible that nothing went wrong and I just misjudged my braking point. Who knows..
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Old 09-21-2017, 08:40 AM   #29
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I've read somewhere that if you mix brake fluid with bleach it makes for a VERY effective smoke bomb........but every time I get reminded of it we're out of bleach......like right now, no bleach. So the only next thing I wanna see in this thread is that tested.
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Old 09-21-2017, 11:01 AM   #30
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Turkey baster from supermarket, suck you reservoir
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