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  1. #1
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    Default Identify DOT brake fluid using water

    Neat trick with clear video of the differences between fluids as shown by attempting to mix them with water. If you're not sure what's in your system this could avoid having to disassemble and flush it after adding the wrong fluid.

    https://www.youtube.com/watch?v=0aMf3I0ez5s

  2. #2
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    Dot 5 feels more like snot between a thumb and forefinger. Dot 3, 4 &5.1 feel thinner.

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    I've seen purple dye in 5 and 5.1.

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    Same here. IMO is should have been the standard as it's a bit more convenient.

  5. #5

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    Quote Originally Posted by confab View Post
    I've seen purple dye in 5 and 5.1.
    The purple color goes away with age. And Dot5 and Dot5.1 are two very different fluids, so both being purple will just confuse things further.

    Jim

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    Quote Originally Posted by JBinNC View Post
    The purple color goes away with age. And Dot5 and Dot5.1 are two very different fluids, so both being purple will just confuse things further.

    Jim
    Yeah.. I didn't know the difference and the guy at the autozone (I think?) didn't either.

    My master cylinder leaked after that. I think it was the fluid.

    Dot 5 only.

  7. #7
    Jermit
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    Thank you very much, this is such an easy and convenient way to distinguish the brake fluid base. And most importantly, a glass of water can always be found at any car service.

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