Help! Massive brake line leak - Page 4 - BMW M5 Forum and M6 Forums
E39 M5 and E52 Z8 Discussion 1998-2003 Advertiser's Forum

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post #31 of 36 Old 10th September 2018, 11:49 PM
mgdmb
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And yes, good DOT4 fluid is what you want. ATE200 is good if you aren't tracking, RBF600 or 660 if you do...
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post #32 of 36 Old 11th September 2018, 08:28 PM
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Quote:
Originally Posted by mgdmb View Post
https://www.ecstuning.com/b-ecs-part...it/e393430kit/

Is the kit I ordered, sales guy doesn't know what he's talking about...
I tried to explain to him that they had the parts, but just gave up trying. I decided to just go OEM again after I lost confidence they could even provide me the correct parts if I pointed them out for them.

But regardless, thanks for your help. At least I know the source of the leak and can take care of it.

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post #33 of 36 Old 25th September 2018, 04:39 PM Thread Starter
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Thanks. This helps a lot. I'll look into using SS lines as replacements. I plan to get underneath the car today. Glad it happened in a parking lot and not on the street.
Hi sorry for the late reply, I hadn't checked these forums in a while. Yes these are the exact lines that broke on my car! I added some heat shielding tape.
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post #34 of 36 Old 11th October 2018, 03:34 PM
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Quote:
Originally Posted by mgdmb View Post
https://www.ecstuning.com/b-ecs-part...it/e393430kit/

Is the kit I ordered, sales guy doesn't know what he's talking about...

You can use a pressure bleeder, but I've never achieved satisfactory results that way. Two person method has always provided much better pedal feel for me, I know others here swear by it as well.
but the reason for using a pressure bleeder in this instance is that the hard line you are disconnecting is SO close to the DSC unit, wouldn't it be more likely to get air into the DSC unit from replacing these lines than the rubber lines that connect directly to the caliper? Unless there is pressure there, the fluid might want to drip a bit and before you know it, air may be getting backed up into the unit and then you're F'd? Or do pressure bleeders have no impact on the DSC unit?

ECS rep is a moron, they sell multiple sets of these mid brake lines. Stainless steel is obvs a better choice here maybe, but I have always been hesitant to use any lines other than OE or ATE. Maybe the stainless also acts as a heat sync and makes the hose inside actually HOTTER than it would be without the stainless. Just a thought.

Hey, if the OE mid lines last 150K miles, then why not just replace with OE or ATE?

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post #35 of 36 Old 11th October 2018, 05:30 PM
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Here is a picture from my friend with the 2003 530i. He just took this pic. Seems his car has a substantial heat shield in that area to protect the lines. Is this not there on the S62?
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mid brake lines.png  

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post #36 of 36 Old 11th October 2018, 05:40 PM
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