Brake Fluid Questions

[gotboost]

Just got some SS Brake lines, and Iam going to be flushing my brake system and clutch.

1. How much Fluid do I need?
2. Thinking about Pentosin RBF, or ATE Super Blue... or any other suggestions.

Mostly street driving and autocross 2/3 times a year.

Thanks

[rxrep]

Be careful with Super Blue. For every person who says it's fine, you'll find two who have had squeeky clutches due to it. Mainly in the B5 crowd, but still, it isn't that great of fluid to take the chance.
If you flush clutch too, which you should, then you're talking a little over 2 liters.
I go with Motul. ATE gold will work in a pinch.

[UGwagen]

Be careful with Super Blue. For every person who says it's fine, you'll find two who have had squeeky clutches due to it. Mainly in the B5 crowd, but still, it isn't that great of fluid to take the chance.
If you flush clutch too, which you should, then you're talking a little over 2 liters.
I go with Motul. ATE gold will work in a pinch.

I have heard the same thing about ATE Super Blue. Though I have never experienced the clutch squeak issue myself, using ATE super blue. Of course ATE Type 200 (gold) is essentially super blue without the dye.

ATE Type 200 falls in between Motul RBF 600 and Motul 5.1 in price & performance.

[gotboost]

Ok so 3 liters will be OK, and rxrep, you are talking about the Motul 5.1, or RBF600,and also does the ATE Type200 have the clutch squeek problem or just the blue?

[rxrep]

Just the blue, due to the dye. So they say. I used it for years in my VW's with no problems. Great to flush with, because you can change color back to gold every other flush and know for sure when you've got the old stuff out.
But I've read too much about it in the B5 forums to risk it.
I can't tell you off hand which Motul has higher boiling points and/or longer life. I use 5.1, but mine gets swapped after every track day or once a year if I didn't track that year.
If I'm tracking a lot, I use the ATE Gold, because it's cheaper in volume. The Motul comes in .5 liters and the ATE comes in full Liters and is easier to get if you need it fast. It's boiling points are on par with the Motul and I honestly couldn't tell any difference in the real world. Fresh fluid with good boiling points, changed often.... well, in that instance to me doesn't matter too much what brand you use unless you want to brag about using Motul. Big deal.

[gotboost]

Yeah gonna go with the Type 200, dont want to risk it with the blue one... have people with B6's also had the squeeking problem

[rxrep]

Yeah gonna go with the Type 200, dont want to risk it with the blue one... have people with B6's also had the squeeking problem

Not to my knowledge, but like I said, it's not leaps and bounds better than other fluids so why risk it? The only advantage I see with it is being able to tell when you've flushed completely when interchanging with gold.

[gotboost]

Not to my knowledge, but like I said, it's not leaps and bounds better than other fluids so why risk it? The only advantage I see with it is being able to tell when you've flushed completely when interchanging with gold.

Yeah, so is there anyway to tell when i have the typ 200 bled trough all the way? and also do i want to bleed the clutch 1st or brakes

[rxrep]

Yeah, so is there anyway to tell when i have the typ 200 bled trough all the way? and also do i want to bleed the clutch 1st or brakes

I always do brakes first. Not sure if that is correct because Bentley doesn't really say.
Order of bleeding for brakes is weird according to Bentley instructions. Start nearest caliper and end furthest caliper from master cylinder. Which is opposite of most cars.
Clutch needs >100cc flushed out, and the pressure on the powerbleeder (buy one if you don't have one.... they are awesome) needs bumped to 30psi for the clutch.
On the brakes, if you've not changed the fluid yet, I'd bet it wasn't done before, and believe me, you'll know when you've flushed enough. You won't believe some of the crap that can come out of there. The fluid should look just like the fluid in your powerbleeder. Crystal clear. EDIT: I FORGOT TO MENTION- AND IT SHOULD BE LIGHT-COLORED. OLD FLUID CAN GET PRETTY DARK.Don't forget to NOT ever shake anything with fluid in it. Air bubbles are bad, mmmm-K?

[gotboost]

I have only bled the front brakes when i did my b5s4 fronts

[HTA A4]

Be careful with Super Blue. For every person who says it's fine, you'll find two who have had squeeky clutches due to it. Mainly in the B5 crowd, but still, it isn't that great of fluid to take the chance.
If you flush clutch too, which you should, then you're talking a little over 2 liters.
I go with Motul. ATE gold will work in a pinch.

Is that seriously why?? I was wondering whhyyy! Does it affect the performanceof the clutch? And why does it make the CLUTCH squeaky?

[3ohAvant]

I've heard the same about the ATE blue. If you want ATE, then get the gold, its the same, only cheaper, but not blue.

You will need roughly 3 liters.

The Pentosin Racing stuff is great, and its way cheaper than the Motul. We use the Pentosin Racing in our AutoX gti.

I don't know about the Pentosin, as we have not had it in there a year yet, but Motul RBF should be flushed once a year, it soaks up water like a sponge. The Motul RBF 600 has a higher boiling point than the Pentosin Racing, I forget by what, its not that much. I have the figures for most of those fluids if you really want it.

The motul 5.1 is perfectly fine for the st. but not for any significant amount of track days. Same with plain Pentosin Super DOT 4.

[CO AVANT]

I've been telling people for years to stay away from that ATE blue crap. As much as I like the Motul RBF600 for its wet boiling point, it just does not last as long as the Motul 5.1. The RBF600 needs to be changed much sooner than the 5.1 due to moisture. The 5.1 is also 1/2 the price of the RBF600.

[HTA A4]

So Motul 5.1 is the way to go?

[CO AVANT]

Yes. I drive the shit out of my car and don't overheat the 5.1

[HTA A4]

I track the car occasionally. Have you had the car under track conditions?

[CO AVANT]

Give me a break I drive my car in a lot harder conditions than track conditions If your track sessions last longer than 1hr straight without stopping and you do it on the regular, I'd go with the 600.

[wolfdog]

I like the ATE gold. It's priced well and has respectable boiling points. I don't track or anything but it's served me well with my SS lines just about 1.5 years into it.

[rxrep]

As I'd said, when I track regularly, I switch to ATE Gold or Pentocin Racing because it's cheaper with boiling points very near Motul.
I've had brakes almost on fire and have not had any fluid problems with ATE. If you are tracking, you should be swapping more frequently regardless of which fluid you'd pick.