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Old 08-28-2006, 07:38 AM   #1
wazzzzup
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Best brake fluid to use for e36 m3



Hey Guys,

I am going to be flushing my brake system tomorrow and i am looking for some info on what break fluid to use.

What is the best of the best when it comes to brake fluid and where do i find it
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Old 08-28-2006, 11:21 AM   #2
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I also need to know how much brake fluid a 99 m3 takes
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Old 08-28-2006, 12:25 PM   #3
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ATE Superblue is a great product, and most BMW's take around a litre. My E30took less than a litre including clutch.
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Old 08-28-2006, 02:34 PM   #4
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I put this in after I got my steel brake lines put in.



ATE Super Blue has a dry boiling point of 536F and a wet boiling point of 396F.
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Old 08-28-2006, 02:40 PM   #5
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Thanks guys!

I picked up 2 litres of ATE Superblue since i plan on bleeding the clutch and i rather have too much than too little
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Old 08-28-2006, 02:50 PM   #6
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I had superblue and my brakes were still mushy, I was told that racing fluid is not good for street use becaues the fluid needs to be hot to perform effectively. (Maybe my lines are too old)

Mitch did you notice a big difference?
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Old 08-28-2006, 02:58 PM   #7
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I was told superblue is pretty much OEM fluid.

I take it you have stock brake lines?
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Old 08-28-2006, 03:13 PM   #8
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Quote:
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Mitch did you notice a big difference?
I've had no problem with my brakes at all. I even changed my pads to dustless ceramics too. Feels better when I brake now. I just put the racing fluid in for the times when I REALLY need to use my brakes HARD so it will help me out by not heating up and being all sloppy.
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Old 08-28-2006, 03:22 PM   #9
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Superblue here as well. Took less than a liter for clutch and brakes. No problems and seems to perform well.
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Old 08-28-2006, 04:18 PM   #10
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I use DOT 5.1, not Superblue (only 4).

Didn't notice a difference in feel at all though. Nice to have the high boiling points I suppose.
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Old 08-28-2006, 04:31 PM   #11
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Dot 5.1 is the highest now, supposedly it has a better "stiffness?" than superblue.

Mitch, you didn't notice much of a difference either right?
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Old 08-28-2006, 04:42 PM   #12
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Which ones?

Quote:
Originally Posted by Mitch555
I even changed my pads to dustless ceramics too.
Brake fluid does not get as hot on the street as on the track.
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Old 08-28-2006, 05:31 PM   #13
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Quote:
Originally Posted by Gamite
I had superblue and my brakes were still mushy, I was told that racing fluid is not good for street use becaues the fluid needs to be hot to perform effectively.
That makes no sense. Who ever told you that must be on crack.

You probably have air trapped in your ABS pump or something.
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Old 08-28-2006, 05:35 PM   #14
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^ or a master cylinder problem

to original poster: just like almost anything, brake components/fluid is all about compromise. Don't listen to people who say this or that is the best cause it performs the best on track. It might be the best on track, but will screw you over on the street.
I wouldn't buy brake fluid based just on how high the boiling point is. I hear that some fluids have more water absorbancy than others. All those factors and differences add up. Do some research (starting here: http://stoptech.com/tech_info/wp_brakefluid_1a.shtml)

dot 5.1 seems to be the best(?) choice, but if you just drive on the street and far from overheating your fluid, you don't need to spend extra money on super-duper fluids. Super blue fluid seems to work just fine for even avid amature racers.

Last edited by static; 08-28-2006 at 05:47 PM.
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Old 08-28-2006, 05:45 PM   #15
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Quote:
Originally Posted by Gamite
Dot 5.1 is the highest now, supposedly it has a better "stiffness?" than superblue.

Mitch, you didn't notice much of a difference either right?
No, just a higher boiling point. If you have mushiness something else is up.

Also note ATE Super Blue also comes in gold; its handy to alternate between the two colours so you know when you're actually getting fresh fluid from the bleeders.
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