Brake Fluid
Drifting
Joined: Dec 2016
Posts: 1,381
Likes: 219
Le Mans Master
Joined: Oct 2000
Posts: 6,499
Likes: 717
From: Sausalito CA
I'd say 6 pints.
Flush.
One pint per wheel.
One pint for ABS module.
One pint for the reservoir.
If on a budget 4 pints may suffice.
Yet murphy's law, you will always be one pint short.
Have fun.
Flush.
One pint per wheel.
One pint for ABS module.
One pint for the reservoir.
If on a budget 4 pints may suffice.
Yet murphy's law, you will always be one pint short.
Have fun.
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Safety Car
Joined: Mar 2007
Posts: 4,353
Likes: 542
From: Sarasota FL
St. Jude Donor '25-'26
One pint per wheel is a bit overkill but brake fluid is cheap. The rear have a much longer run than the fronts.
I do not worry about the ABS system. When it activates the small volume of fluid in the ABS system dilutes.
I am a fan of speed bleeders. They make it an easy one man job.
I do not worry about the ABS system. When it activates the small volume of fluid in the ABS system dilutes.
I am a fan of speed bleeders. They make it an easy one man job.
Melting Slicks
Joined: Jul 2005
Posts: 2,649
Likes: 863
I'd have at least two quarts ready. How much you actually use is going to depend on a number of factors - including how "contaminated" the old fluid was.
One trick that can save some fluid is to fully depress all the pistons back into their bores on each caliper. If you do this - I would open the bleeder valve when you do so - thus avoiding pushing the dirtiest fluid back into the brake system). If the pads are fairly worn, and the caliper pistons are part of the way out - there is a fair amount of fluid in each bore - and it will take a fair bit of fluid to flush that older fluid out. If the pistons are fully seated - lots less fluid in each bore - so less fluid required to flush out.
One trick that can save some fluid is to fully depress all the pistons back into their bores on each caliper. If you do this - I would open the bleeder valve when you do so - thus avoiding pushing the dirtiest fluid back into the brake system). If the pads are fairly worn, and the caliper pistons are part of the way out - there is a fair amount of fluid in each bore - and it will take a fair bit of fluid to flush that older fluid out. If the pistons are fully seated - lots less fluid in each bore - so less fluid required to flush out.
Drifting
Joined: May 2019
Posts: 1,744
Likes: 672
From: Lakeland, Florida
Thanks. Any particular/specific model you prefer ? I was reading some reviews on a Motive model and some had trouble get the MC cap to fit/seal ?
Do these bleed each caliper separately at the caliper bleed screw or from the MC ? I've seen a YouTube with a model (not Motive) that connects a line to each caliper bleed screw, trigger pump extracts brake fluid from the caliper into an inline waste bottle, empty old fluid, top off MC fluid, repeat previous steps on each caliper until fluid runs clear.
Do these bleed each caliper separately at the caliper bleed screw or from the MC ? I've seen a YouTube with a model (not Motive) that connects a line to each caliper bleed screw, trigger pump extracts brake fluid from the caliper into an inline waste bottle, empty old fluid, top off MC fluid, repeat previous steps on each caliper until fluid runs clear.
Melting Slicks
Joined: Jul 2005
Posts: 2,649
Likes: 863
Thanks. Any particular/specific model you prefer ? I was reading some reviews on a Motive model and some had trouble get the MC cap to fit/seal ?
Do these bleed each caliper separately at the caliper bleed screw or from the MC ? I've seen a YouTube with a model (not Motive) that connects a line to each caliper bleed screw, trigger pump extracts brake fluid from the caliper into an inline waste bottle, empty old fluid, top off MC fluid, repeat previous steps on each caliper until fluid runs clear.
Do these bleed each caliper separately at the caliper bleed screw or from the MC ? I've seen a YouTube with a model (not Motive) that connects a line to each caliper bleed screw, trigger pump extracts brake fluid from the caliper into an inline waste bottle, empty old fluid, top off MC fluid, repeat previous steps on each caliper until fluid runs clear.
The Motive (and other similar systems) simply pressurize the Master Cylinder a bit (typically 10 - 15 psi) - so you can then open one bleeder valve (at the caliper) at a time and run brake fluid through the system. It works pretty well.
The systems that hook to the bleeder screw and pull a vacuum also work, but they tend to suck air in around the caliper bleeder screw. This air doesn't get into the brake system - but you get a continuous stream of bubbles so you have no idea when you're done bleeding.