faxter18

I'm looking to change my brake lines to SS. Should I do a flush first and then install my SS lines and add more break fluids? My master cylinder looks pretty nasty. I figure this way would be using more brake fluid, but will keep my lines clean.

Chris_Lum

might as well constantly keep it full so you don't accidentally run it dry and get air in the lines.

Sellout

That's exactly the way I feel about it. I fill it every time it gets low enough to take more fluid so that in case I get distracted with something else, I have a few more minutes to get back to it and fill it up again.

dwight

My point is that I don't believe it will speed it up significantly. "Fluid is weight, the fuller you keep it the quicker you will be finished," is at vague and misleading. It isn't harmful, but it isn't right either.

In practice, I do oil, trans, diff, clutch fluids at the same time as bleeding the brakes. The reservoir holds enough fluid that I don't top it off while bleeding a single corner.

First I clean out the reservoir like Billman says, then I:
1)Start the bleed
2)Change a fluid
3)Wait for the color to change.
4)Close that bleeder and top it off.
5)Repeat as needed for other corners and fluids.

If you want to babysit the reservoir and keep topping it off, that's up to you.

s2000Junky

It makes sens to me to drain the entire system to remove the brake lines, then once everything is installed, perform the gravity procedure. In this case your waiting for fluid to come out of each caliper, rather then just turning blue from the old to new fluid.

dwight

Having said that, as a whole, I wouldn't hesitate is recommending this to anyone looking to bleed their brakes. My issue is a very small technical point which can be dismissed as being trivial if you like.

s2000Junky

Yeah exactly, so who cares! Use your superpowers for something worthwhile why don't you.

Nerds

Definition of someone who is anal retentive - Attention to such arbitrary detail that the person becomes an annoyance to others.

SpitfireS

My experiences with ATE Super Blu Racing (as it is called overhere) and ATE SL.6 made me use nothing but SL.6
It's a thinner fluid and IMO makes the ABS act quicker when its cold outside - that's when you need ABS the most.
Boiling points (yes, both) are slightly less than Blue, for DD-ing and spirtited (public road - occasional track day) driving you will not notice the difference.
For serious track days there are better fluids, btw for serious track days you need other pads & tires too.
Service life of the SL.6 is 2 years (3 years for Blue) but I change the fluid every 1 to 1-1/2 year anyway.
Whats left I use for the clucth - it really helps to smoothen the pedal down and up (with an ACT PP)

To everyone that now thinks: if Billmans says to change the fluid I will do this tomorrow SIR YES SIR!
(When Billman says "Jump" all you ask is "HOW HIGH SIR?")
It makes a difference to push (or turn) the pistons back in.
Less old fluid to stay behind and hide.
Sure, its way more work and mayby not for everyone but IMO it is worth it.
Open the bleeder - with hose attached ending is a jar filled with brake fluid - to not push old fluid in the lines while you push/turn in the pistons.

If one really wants to bleed fast one has to warm-up (*) the new fluid container too.
Added static pressure by higher lever is way way less of a benefit than thinner (because warm) fresh fluid.
(*) do so at your own risk!
Or only change brake fluid in summer.
Or in a heated garage.
Or...

Oh well..

starchland

I always use gravity bleed method and also on the clutch too. I find it the least intrusive method if you already have an air free system. I found also by keeping the reservoir topped up it does help push push fluid through the line from extra weight. What were your findings?

Billman do you have a picture of a poorly maintained brake piston? This may make some people pay more attention to the most important fluid in your car and often time least maintained

Billman250

I never asked anyone to change their brake fluid, or to jump.

I do DIYs for those that chose to benefit from them.