lds fluid

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notinserviceuk
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lds fluid

Post by notinserviceuk »

hi all does lds fluid breakdown over time if so should i replace

ty
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mickthemaverick
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Re: lds fluid

Post by mickthemaverick »

In a word, yes it can do or absorb moisture . I always changed mine every 80000 miles or 4 years depending on which came first. :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
notinserviceuk
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Re: lds fluid

Post by notinserviceuk »

i reacently change the spheres on the back and the fluid looked like a greeny light naked colour but in the tank its orange colour so i guess its meant to be orange only what fluid do you use
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mickthemaverick
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Re: lds fluid

Post by mickthemaverick »

I don't use any now but I used to use Total :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
notinserviceuk
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Re: lds fluid

Post by notinserviceuk »

is it meant to be orange in the spheres as well can you remeber
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mickthemaverick
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Re: lds fluid

Post by mickthemaverick »

Yes pinky orange throughout!! :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
PaulC5
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Re: lds fluid

Post by PaulC5 »

LHM fluid used in older Citroens is a green colour so possibly some of that has been used in the past.
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Stickyfinger
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Re: lds fluid

Post by Stickyfinger »

As it is both Old & Discoloured, I would just drain the system and refill with new.

It is not uncommon that parts of the system do not get much "exchange/flow".........from what I understand, it does little damage (short term) to have LHM in a LDS system but LDS in an LHM system is a no no.

Before you drain the system, hold the brake peddle down (a foot or a stick :) ) then go to each wheel and drain a good amount out from each caliper, this will get old LDS/LHM mixed oils (if that has happened) out of the "dead ends" where there is normally very little return.

ALWAYS USE AXLE STANDS....Citroen's can kill you if they decide to drop when I/you/we do something stupid or the car decides to by itself :)
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PaulC5
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Re: lds fluid

Post by PaulC5 »

Stickyfinger wrote: 17 Dec 2025, 12:36 As it is both Old & Discoloured, I would just drain the system and refill with new.

Before you drain the system, hold the brake peddle down (a foot or a stick :) ) then go to each wheel and drain a good amount out from each caliper, this will get old LDS/LHM mixed oils (if that has happened) out of the "dead ends" where there is normally very little return.

ALWAYS USE AXLE STANDS....Citroen's can kill you if they decide to drop when I/you/we do something stupid or the car decides to by itself :)

On the C5 the brakes are not connected to the suspension fluid so these can be left alone.
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xantia_v6
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Re: lds fluid

Post by xantia_v6 »

PaulC5 wrote: 17 Dec 2025, 22:33
On the C5 the brakes are not connected to the suspension fluid so these can be left alone.
And the brakes of course use DOT4 or DOT5.1.

I don't think that LDS is hygroscopic, so unless contaminated, it should not need changing (but it shouldn't be green).
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Stickyfinger
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Re: lds fluid

Post by Stickyfinger »

My BAD.....thinking XANTIA
Alasdair
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myglaren
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Re: lds fluid

Post by myglaren »

xantia_v6 wrote: 17 Dec 2025, 23:33
PaulC5 wrote: 17 Dec 2025, 22:33
On the C5 the brakes are not connected to the suspension fluid so these can be left alone.
And the brakes of course use DOT4 or DOT5.1.

I don't think that LDS is hygroscopic, so unless contaminated, it should not need changing (but it shouldn't be green).
I have used green LDS. A long suspension pipe ruptured and left the C5 on it's knees. Had to buy LDS from the nearest source, unfortunately Halfords, and it was Comma LDS which is green. It was only in for a very short time, enough to get the car on a beavertail and to the garage.

Citroenmad also bought a C5 with green LDS or possibly LHM and observed that it foamed quite a lot. He did drain it of course and fill with the proper vintage.