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  1. #1
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    Is this a sign of leaking hydraulic fluid?

    Noticed that the finish on both of my brakes near where the tubing leaves the reservoir is kind of bubbling (pics below). Is this a sign that they are leaking fluid? I'm kind of surprised that the fluid used would be so corrosive to the finish if that's what it is.
    Attached Thumbnails Attached Thumbnails Is this a sign of leaking hydraulic fluid?-image.jpg  

    Is this a sign of leaking hydraulic fluid?-image.jpg  

    Is this a sign of leaking hydraulic fluid?-image.jpg  

    Is this a sign of leaking hydraulic fluid?-image.jpg  


  2. #2
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    My Avid Elixirs do that too.
    Just stick it in granny and start grinding.

  3. #3
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    Quote Originally Posted by kjlued View Post
    My Avid Elixirs do that too.
    Weird, any idea what it is? I haven't noticed any change in how the brakes perform yet which makes me question if it's from the fluid. Do yours have it in the same spot too?

  4. #4
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    Quote Originally Posted by kjlued View Post
    My Avid Elixirs do that too.
    Yep, mine does it too. It must be from the fluid..

  5. #5
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    Quote Originally Posted by Flowy View Post
    Weird, any idea what it is? I haven't noticed any change in how the brakes perform yet which makes me question if it's from the fluid. Do yours have it in the same spot too?
    My brakes work fine.

    DOT 5.1 brake fluid which is what the Avids us is corrosive.
    It is possible that a little got on there when filling.
    I wouldn't worry about it as long as the are working fine.

    There is not a lot of fluid in out systems so even a little leaking out would be noticeable.
    Just stick it in granny and start grinding.

  6. #6
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    Quote Originally Posted by kjlued View Post
    My brakes work fine.

    DOT 5.1 brake fluid which is what the Avids us is corrosive.
    It is possible that a little got on there when filling.
    I wouldn't worry about it as long as the are working fine.

    There is not a lot of fluid in out systems so even a little leaking out would be noticeable.
    That's concerning since I've had the bike for almost a year and never bled the brakes. If its from the brake fluid it must be a leak. Weird that I noticed it on both levers at the same though. I guess I'll see if my brakes go out when I ride tomorrow.

  7. #7
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    Quote Originally Posted by Flowy View Post
    That's concerning since I've had the bike for almost a year and never bled the brakes. If its from the brake fluid it must be a leak. Weird that I noticed it on both levers at the same though. I guess I'll see if my brakes go out when I ride tomorrow.
    Mine is almost a year old.
    It is actually only on the front brake which has never been bled either.
    Odly enough, the rear was bled because of a dumb ass thing I did but it is not on the rear lever.

    I would guess that it is a factory thing.
    Even if not, the brakes will not instantly go out from a slight leak.
    You will notice where you need to start pumping the brakes a little before total failure unless something catastrophic happens and even then the chances of it happening on both brakes at the same time is not likely.

    Just keep riding until you notice they are not performing well.
    Just stick it in granny and start grinding.

  8. #8
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    Thanks, I hate the distraction of worrying about a component that's close to failing on a ride.

  9. #9
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    A little late to the game but didnt want to reply without a picture of my own. Yea, mine leak a little too, probably one drop a month..
    Put a mountain biker in a room with 2 bowling balls and we'll break one and lose the other - GelatiCruiser

  10. #10
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    This basically happens to any DOT fluid brake after enough time. Its damn hard to stop DOT fluid from leaking at all and even just a tiny bit will remove paint and powdercoat. It wont affect the brake's operation though.

    Just another reason to prefer mineral oil...

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