Which hi temp brake fluid?

Discussion in 'SRT Hellcat Performance' started by Hb hellcat, Oct 3, 2015.

  1. Hb hellcat

    Hb hellcat Black Betty...BamAlam!!!

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    ran the "roval" at Fontana today and started getting some brake fade by end of 2nd session. Let everything cool and by last third of third session was really having an issue with slowing!
    By smells and visual inspection, it's apparent I boiled the brake fluid.
    What dot grade and brand do you guys think should be run?
    I've always used Motul in the past, is there some new tech wonder fluid out there?
    Inquiring minds want to know and Thank You for any feedback
    Btw, top speed 150 entering the high banks and weighed 4890 pounds with 1/4 tank of gas and me in it. Them brakes got a LOT of work to do!
     
  2. NorCaletch19He77Kat

    NorCaletch19He77Kat Silver Member

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    how do you know it was the fluid and not the rotors??
     
  3. Hb hellcat

    Hb hellcat Black Betty...BamAlam!!!

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    While the rotors and pads were smoking when I came off the track, that was a different smell. Smelled like burnt brakes, I can do that to most cars, mostly rentals, and I'm very familiar with it. This also wasn't like usual when I've over cooked the pads, again, been there, done that with almost everything I drive.
    I do enjoy driving.
    This was a new smell, kinda sweet.
    Easily replicated by removing the brake fluid reservoir cap and smelling.
    There was also quite a bit of oil residue on the driver side valve cover and firewall plastic trim. Determined to be power steering fluid! Guess will need to be looking at that as well. Very hot cap, too hot to touch bare handed. (Billet tech beauty caps). Saw similar issues with other srt cars not just hellcats, so will look further into those solutions.
    Mainly looking for input on brake fluid knowledge and recommendations for fluids that meet Chrysler warranty specs with a much higher boiling point than currently used by the factory.
    Thank you for your input!
     
  4. TallCool1

    TallCool1 Gold Member Hellcat Car Club Gold Supporting Member Nat'l Hellcat Tech Advisor HCC Charter Member

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    Look here. You don't need to spend an arm and leg on RT700. In the thread below you'll see links to specs and comparisons. I punished the stuff heat wise 0 issue.

    683F boiling point.

    Brake fluid change or flush prior to a track day | SRT Hellcat Forum


    http://www.amazon.com/Torque-RT700-Performance-Racing-Single/dp/B00IITUPCS
     
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  5. NorCaletch19He77Kat

    NorCaletch19He77Kat Silver Member

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    careful what you do--can get worse..

    how many miles on the brakes now?
     
  6. Meat

    Meat Hellcat Member

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    When I roadraced motorcycles I used Castrol SRF brake fluid. It has the highest wet boiling point that I know of. Wet boiling point is what I would be concerned with not the dry boiling point.
     
  7. Hb hellcat

    Hb hellcat Black Betty...BamAlam!!!

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    Thanks for the links and input.
    Just over 3000 miles, one auto cross, the big track day, and lots of drag races. So not what you would call easy miles.
     
  8. TallCool1

    TallCool1 Gold Member Hellcat Car Club Gold Supporting Member Nat'l Hellcat Tech Advisor HCC Charter Member

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    RT700 specs right up there with SRF, at about half the cost. Less hygroscopic too. Slight nod for compression. I like the Castrol but they can pack sand at its price point and I'd rather use usa made. I saw nothing gained or lost in cars or bikes between SRF and RT700. (I raced the multistrada using RT700, and the SRF, horrible on brake fluid rear master / pump inches away from the cat.) SRF and RT700 are the 2 to use though, imho.
     
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  9. TallCool1

    TallCool1 Gold Member Hellcat Car Club Gold Supporting Member Nat'l Hellcat Tech Advisor HCC Charter Member

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    Welcome if you switch change annually minimum to deal with water absorbtion (if you choose SRF or RT700.)
     
  10. redhemi

    redhemi Gold Member

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    In the 5th edition OM pg 275 it describes how too seat your brake pads for track use,sounds like you over heated the pads and now there glazed!!
     
  11. Meat

    Meat Hellcat Member

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    On Amazon it lists the wet boiling point of the RT700 as 439 degrees F @ $34 for 16.9 oz ($2.01/oz). The wet boiling point of the SRF is 518 degrees F @ $63/qt ($1.97/oz).
     
  12. TallCool1

    TallCool1 Gold Member Hellcat Car Club Gold Supporting Member Nat'l Hellcat Tech Advisor HCC Charter Member

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    My bad you're right. That was less significant to me I changed fluids often racing. What I focused on was compression and air absorbtion mostly. Both fluids are hygroscopic I never saw a performance bene that justified the srf price. They're both really good.
     
  13. Hb hellcat

    Hb hellcat Black Betty...BamAlam!!!

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    Thanks again for all the input!
    Down to castrol or torque!
     
  14. BULL

    BULL ________173.7mph_______ ___2016 Colorado Mile___ Gold Supporting Member

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