Brake fluid usage?
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Tuned
Joined: Nov 2017
Posts: 301
Likes: 144
Brake fluid usage?
2011 F-250 SD 6.2 FX4
120K
It seems I am using fluid, but can see no leaks.
I have to top it off a few times a year.
All new brakes, rotors, etc @ 100K
It seems to me it uses more than any truck/car I've ever owned, but too, its the first 3/4 ton I've ever owned.
Not sure, but I don't recall it uses fluid like this when I first bought it.
Any ideas?
I pull my travel trailer and need my brakes
120K
It seems I am using fluid, but can see no leaks.
I have to top it off a few times a year.
All new brakes, rotors, etc @ 100K
It seems to me it uses more than any truck/car I've ever owned, but too, its the first 3/4 ton I've ever owned.
Not sure, but I don't recall it uses fluid like this when I first bought it.
Any ideas?
I pull my travel trailer and need my brakes
Fleet Mechanic
Joined: Dec 2021
Posts: 1,735
Likes: 1,116
Brake system is a sealed system and should not need topping off. You have a leak somewhere.
If you dont see any fluid seeping from the lines, fittings, bleeders, then id suspect a caliper piston seal is weeping.
If you dont see any fluid seeping from the lines, fittings, bleeders, then id suspect a caliper piston seal is weeping.
Thread Starter
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Tuned
Joined: Nov 2017
Posts: 301
Likes: 144
Also, I believe my brake pedal is not as stout, a little spongy perhaps, that I think will actually keep depressing a little if I stand on it hard, not that I slammed my brakes.
Thanks for your reply!
Fleet Mechanic
Joined: Dec 2021
Posts: 1,735
Likes: 1,116
As your pads wear down more fluid will fill the gap in the caliper piston but it should never be to the point where you have to actually add fluid. New pads should return your fluid level back to the full mark on the reservoir.
Check around, you'll eventually find a leak based off of what you described is going on.
Check around, you'll eventually find a leak based off of what you described is going on.
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
A slow sinking pedal is an indicator that you need a new MC. Unexplained brake fluid loss is an indicator that the MC should be inspected.
I think the MC should be examined, as a start anyway.
I think the MC should be examined, as a start anyway.
Laughing Gas
Joined: Jan 2019
Posts: 868
Likes: 84
From: Florida
Usually, if the Master Cylinder is leaking you'll find dripping on the frame rail below it. My 2002 MC located on the drivers side has a slow leak and I have the parts to replace it. It doesn't leak a lot of fluid but enough to make the metal wet-ish below it. Anyway, on my 2002 it is the ORIGINAL MC so it's time to change it out.
Peace-out,
Peace-out,
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Tuned
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