1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Brake upgrade question

Discussion in 'General Technical / How To' started by mark_20vt, May 25, 2010.

  1. mark_20vt
    Offline

    mark_20vt New Member

    Joined:
    Sep 29, 2009
    Messages:
    5
    Likes Received:
    0
    [May 25, 2010]
    I'm looking at prepping my 8L S3 for a trackday and am starting off with the brakes. I will be fitting X-drilled discs front and rear with ferodo ds2500 pads. My issue is with the brake fluid. I have had it suggested to me to upgrade to dot 5 fluid to cope with the greater temperatures that the fluid will have to cope with but dot 5 is silicone based so it is hydrophobic (does not absorb moisture) meaning that if i drain the current dot 4 (which contains an element of moisture) this moisture will not be absorbed by the dot 5. Will this cause any issues being that it will be such a small quantity? Also i've heard that dot 5 isnt recommended for modern abs systems? any reason why? and also that it isnt the greatest for normal road use. so overall is it worth changing or should i just give it fresh dot 4?

    any advice would be appreciated especially if anyone has actually swapped themselves!:racer:
    #1
  2. Ads

    Ads

    [Dec 22, 2014]

  3. mark_20vt
    Offline

    mark_20vt New Member

    Joined:
    Sep 29, 2009
    Messages:
    5
    Likes Received:
    0
    [May 27, 2010]
    if anyone is actually interested in what i've found out its that dot 5.1 can be used as its glycol based just like dot 4...
    #2

Share This Page