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  1. #1
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    Default silicon brake fluid

    hi
    Who has the cheapest 1ltr =1 Quart ,, 4ltr = gallon or 5 ltr container of DOT 5 silicon b/fluid ???

    Trying to avoid 500ml bottles.

  2. #2
    been here .......too long Smitty2's Avatar
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    Default

    .. new braking 'silicon' based system being built eh

    only ever seen silicon fluids in 500ml ... Penrite?... 500ml Wilwood?.. 500ml

    a Google shows Liquid Intelligence (Sydney) does a 1 litre of 'vintage/antique'
    vehicle silicon fluid


    ps.. what is wrong with DOT5 polyglycol based fluid?
    Last edited by Smitty2; 27-07-2021 at 09:15 PM.
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  3. #3
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    Default

    hi
    Brake system been done for awhile now although I have upgraded with stainless parts recently . Yes the Whole system booster /master , prop valve , nik cop lines , flexi braided DOT approved hoses, caliper x4 o/hauled was done .

    Had the slowest leak possible on the original system and it corroded externally one line and marked up the chassis paint slightly . Combined with the original all lines were loosing the factory coating. The system needed attention anyways re anti corrosion calipers / slides / hand brake / booster needed repaint

    The worst is the car is a garage Queen and sits around alot

    Recently went for a drive in the backstreets yea ha but the pedal did not have alot of feeling , was the same running glycol standard fluid . To much booster assistance . The USA fit corvette master with 1 1/8 bore which hardens up the pedal .
    With low manifold vacuum [camshaft] might also be contributing to the lack of feel .

    Did u mean ?
    dot 3, dot 4 , dot 5.1 all glycol based
    Some real good glycol fluids are available now referred to as racing synthetic fluids . I was tempted to use this stuff .

    It appears the main complaints about silicon
    --poor pedal feel
    --can be harder to bleed
    --not suitable for ABS
    SILICON FLUID AERATES AND IS MORE COMPRESSABLE only in some situations
    --water/moisture can concentrate corrosion in calipers etc rather than dispersing in fluid , bleed brakes every 1--2 yrs

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