Dot 4 brake fluid question
07-02-2008, 11:34 AM
#11
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Originally Posted by feintmotion86,Jul 2 2008, 11:11 AM
Or, you can buy the SSBC fluid I'm using, with a 574 degree boiling point for around 7 bucks a bottle and tell the other fluids to screw off.
07-02-2008, 03:01 PM
#13
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Originally Posted by feintmotion86,Jul 2 2008, 03:18 PM
SSBC also offers 574 degree dry boiling point, while ATE is around 530.
07-02-2008, 05:32 PM
#14
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i agree wet boiling point is more important here for track use, even the fluid is cooked creating bubbles, these brake fluid can absorb moisture, which brings the boiling point down next time
i once drained all my brake fluid out, they are about 300ml, so if someone can just do it right, 1 bottle of 500ml "might" be enough, but from my experience, 1.5 bottles is my avg of flushing the whole system, i always have 2 bottles ready and bring the rest to track just in case
i once drained all my brake fluid out, they are about 300ml, so if someone can just do it right, 1 bottle of 500ml "might" be enough, but from my experience, 1.5 bottles is my avg of flushing the whole system, i always have 2 bottles ready and bring the rest to track just in case
07-03-2008, 02:23 AM
#16
Again, regarding ATE Superblue, the one time I used it, the pedal was quite soft at the end of my second day at the track (Watkins Glen, ~75deg temps). The following event I ran Valvoline synth DOT4, and had a firm pedal after two days of dual-driving at Mosport with temps in the upper 80s lower 90s, (same pads and tires used at WGI).
Maybe I got a bad batch of ATE? Anyway, the OP should be fine with off-the-shelf DOT4.
Maybe I got a bad batch of ATE? Anyway, the OP should be fine with off-the-shelf DOT4.
07-03-2008, 05:24 PM
#17
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Originally Posted by feintmotion86,Jul 2 2008, 10:11 AM
Fist off, any fluid that has been "cooked" won't work. The fluid itself develops air bubbles in the system which causes the eventual failture, since the air bubbles compress causing messed up pedal feel and inaccurate caliper contraction.
I'm kinda worry about the "DOT 4" wont be able to run it anymore after it's been overheated on the track day, or will "DOT 3 & 4" will have the same result?
Can anyone confirm this for me? Thanks!
I'm totally stuck w/ which should I be getting lol
07-03-2008, 10:30 PM
#19
I don't think that is a valid generalization. There are many different fluids out there in each category, and each one has different properties. If you want to really know, then you need to find out the wet and dry boiling points of each particular fluid.
07-03-2008, 11:06 PM
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Originally Posted by xxlap1xx,Jul 3 2008, 05:24 PM
My friend told me that the "DOT 3 & 4" fluid is better than the "DOT 4". Because the "DOT 3 & 4" will still work after it's cooled down from overheat, but the "DOT 4" wont work even after cooled down from overheat. Is this true?
I'm kinda worry about the "DOT 4" wont be able to run it anymore after it's been overheated on the track day, or will "DOT 3 & 4" will have the same result?
Can anyone confirm this for me? Thanks!
I'm totally stuck w/ which should I be getting lol
I'm kinda worry about the "DOT 4" wont be able to run it anymore after it's been overheated on the track day, or will "DOT 3 & 4" will have the same result?
Can anyone confirm this for me? Thanks!
I'm totally stuck w/ which should I be getting lol
come test drive my car (brake fluid) that already had 3 x 100+F track days and lots of downhill canyon driving
i have been using Motul 600 and i'm sure i won't risk my life on downhill canyon road with failure brake fluid
u only live like a few mins away from me
