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DOT 5.1 Brake Fluid

Discussion in '2nd Gen. Tacomas (2005-2015)' started by gonathan85, Jan 29, 2015.

  1. Jan 30, 2015 at 10:57 AM
    #21
    gonathan85

    gonathan85 [OP] Well-Known Member

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    Good to know. I'm after the higher boiling point. I didn't know about the fluidity consistency at cold temperatures - good to know.

    Thanks for your input based on track experience. I purchased a set of Hawk LTS pads + Brembo Rotors + SS Brake lines to go along with the current upgrade on this regular cap. I'm installing the goodrich lines right now. (some of them don't fit the OEM brake line bracket & require a bit of filing to seat properly :rolleyes:)
     
  2. Jan 30, 2015 at 5:08 PM
    #22
    L J

    L J Well-Known Member

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    Did you read the post? We are debating 5.1 not 5.
     
  3. Jan 30, 2015 at 5:32 PM
    #23
    loki750

    loki750 Well-Known Member

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    guy above is correct on 5 vs 5.1. 5.1 is compatible with other glycol based fluids, 5 is not. The track guy is right too, I run bikes on track and flush front lines every weekend I'm out. All glycol based fluids will absorb water, the more moisture the lower the bp becomes, more moisture equals spongy lever and brake fade. Is it necessary on your truck hauling heavy loads? Probably not unless your coming down a mountain riding the brakes for extended periods (then your gonna heat em up either way). You're better off just flushing the lines with a decent quality 3 or 4, whatever the manual calls for IMO. Old fluid that has drawn a lot of moisture is what you want to avoid towing or not.

    btw sick car gtaburnout.
     
    Last edited: Jan 30, 2015
  4. Jan 30, 2015 at 7:07 PM
    #24
    03f5sp

    03f5sp Well-Known Member

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    I did read it. If me and the other can't get DOT 4 to boil on a race track, there's no chance in hell that he would need DOT 4 let alone DOT 5. I did answer his question. He does not need DOT 5.
     
  5. Jan 31, 2015 at 5:50 AM
    #25
    L J

    L J Well-Known Member

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    I'll conceed your point that DOT 4/3 fluid is adequate under normal driving conditions. I don't think the racing analogy is universal when discussing towing at or near the safe limit. As an example there are no minivans full of kids on the racetrack to worry about. Why wouldn't you take advantage of every possible performance advantage available? I'm assuming the OP is replacing rotors, pads and brake lines to gain that advantage. So why not spend a couple more dollars and use a high performance fluid too? Is there a downside to using 5.1?
     
  6. Feb 2, 2015 at 8:45 AM
    #26
    gonathan85

    gonathan85 [OP] Well-Known Member

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    Yes, brembo rotors, hawk pads, and ss braided brake lines front/rear.
     

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