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Thread: brake fluid

  1. #1
    Regular Member lizard's Avatar
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    Default brake fluid

    looking for some advice on brake fluid, as I'm not cutting corners for quality I would like to know peoples opinions on the best brake fluid for my new setup. appreciated

  2. #2
    Regular Member glynn's Avatar
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    all break fluids are dot 4 so it wouldnt make any different in brands

  3. #3
    Regular Member lizard's Avatar
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    whats the difference btween DOT 4 and DOT 5.1, keep seeing it but no idea of the differences.

  4. #4
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

    Default

    Sorry to disagree but you get dot 3 (not for abs), Dot 4 (more than adequate for normal to fast driving and dot5.1 (extreme). As long as you don't mix synthetic with mineral you'll be ok.

    The difference is the boiling points

  5. #5
    Regular Member lizard's Avatar
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    so is it the density that is different. and would i see any benefits from the 5.1

  6. #6
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

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    You will if you intend to drive it REALLY hard or use it for track days

  7. #7
    Regular Member lizard's Avatar
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    The reason i wanted to upgrade breaks is, on the way to work, normally about 3am on Monday mornings, there is a lane that is just meant to be driven if you know what i mean, normally over the motorway speed and at the end of it you get to a roundabout and its hard braking, i got brake fade one morning and thats why i decided to look at upgrading them. think 5.1 is the way to go for.

  8. #8
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

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    Brake fade was more than likely just the pads/discs. For brake fluid to boil you have to be accelerating and braking all the time

  9. #9
    Regular Member lizard's Avatar
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    cheers for the advice peoples

  10. #10
    [Ex]Admin Duncan's Avatar
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    As John said, to boil the standard DOT4 fluid you'd have to be giving it some serious what for on the track for that to happen - you're more likely to suffer brake fade first with your discs. When I fitted my VXR fronts I contemplated sticking in DOT5.1 but decided it really wasn't going to give any benefits at all, so I just stuck with the standard DOT 4.

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