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  #1  
Old December 8th, 2009, 07:07 PM
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dmitry
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clutch fluid

what do you use for clutch fluid?
I heard that brake fluid would do? is that correct?
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  #2  
Old December 8th, 2009, 08:15 PM
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Quote:
Originally Posted by ditskovich
what do you use for clutch fluid?
I heard that brake fluid would do? is that correct?
I always just used dot 3. Hope I was right.
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  #3  
Old December 8th, 2009, 08:22 PM
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Castrol GTLMA same as for the brakes.
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  #4  
Old December 9th, 2009, 03:00 AM
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Quote:
Originally Posted by evilfij
Castrol GTLMA same as for the brakes.
x2...
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  #5  
Old August 27th, 2010, 09:20 AM
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OK, now is this dot 4 synthetic or non-synthetic?
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  #6  
Old August 27th, 2010, 11:34 AM
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Wade Garrett
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OK, I can't find this stuff anywhere- what about Land Rover brake fluid?
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  #7  
Old August 27th, 2010, 12:17 PM
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Quote:
Originally Posted by ollieskins View Post
OK, now is this dot 4 synthetic or non-synthetic?
Use DOT 4 for breaks and clutch, Castrol is best, but any non-synthetic is OK. Synthetic will eat away at the rubber seals.
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  #8  
Old June 18th, 2011, 06:25 PM
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Isn't the Castro 4 synthetic? And how bad is synthetic?
Wondering if I put it in mine, and that may be my problem.
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  #9  
Old June 18th, 2011, 07:36 PM
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Quote:
Originally Posted by tomaco1 View Post
Isn't the Castro 4 synthetic? And how bad is synthetic?
Wondering if I put it in mine, and that may be my problem.
Recently I tried to buy non-synthetic DOT 4 Castro, but could not find any. Castro used to be the non-synthetic DOT 4 maker. Now I can not find any non-synthetic DOT 4.
The concern is the high natural rubber content in Land Rover rubber products.

So I recently bought from the Land Rover dealer genuine DOT 4 just for peace of mind (which is most likely Castro).
I change break and clutch fluid at least once a year. I dive less than 8k a year...
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  #10  
Old June 18th, 2011, 08:55 PM
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Quote:
Originally Posted by Jon_Winningham View Post
Synthetic will eat away at the rubber seals.
I'm heard this before. Does anyone have any actual evidence this is true except for old Series trucks??? I've use Castrol synthetic Dot 4 for years and never had a failure.
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  #11  
Old June 19th, 2011, 09:38 AM
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All brake fluid is synthetic with Dot 5 being silicone. The higher the dot # the higher the boiling point. However, dot 5 has no ability to absorb moisture so it should only be used in high performance applications and never mixed with dot 3 or 4.
Also, some fluids are designed for ABS equiped cars. Those require less viscosity because of the valving.
The issue of synthetic eating seals is a myth. That probably came from partial brake overhauls where the piston seals got damaged from being moved too far or they were about to fail anyway and a lighter viscosity fluid was introduced.
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  #12  
Old June 19th, 2011, 09:52 AM
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Quote:
Originally Posted by Red90 View Post
I'm heard this before. Does anyone have any actual evidence this is true except for old Series trucks??? I've use Castrol synthetic Dot 4 for years and never had a failure.
I used some off the shelf synthetic DOT 4 in my first NAS D110 12 plus years ago. The label said something like a boiling point of 550 degrees, much more than the Castro next to it (so it must be way better). Not too long after changing the break and clutch fluid did I have leaks all over. Could be a coincidence... Doubt it...
Maybe Castro is less harsh than other DOT 4 on LR rubber. Still the genuine LR DOT 4 doesn't cost that much more, and would not be surprised in the least if it was really re-labeled Castro. I have also used Jaguar DOT 4 without any ill effects.
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  #13  
Old June 20th, 2011, 11:26 AM
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Since owning my 95 NAS D90 since January 96, I have replaced the clutch fluid twice for just regular maintenance. Both times the clutch fluid I replaced it with was Castrol LMA. Both times, the clutch started leaking within 1-2 months. So now I am on my fourth clutch master cylinder and I have vowed to never change the clutch fluid again unless there is something absolutely wrong with the clutch hydraulics.

Of course, the benefit in all of this is that can change the clutch master without even looking up anything in the WSM! I know which tools I need and how long it will take!

Forget preventative maintenance -- it just makes things break faster on a LR!
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  #14  
Old June 20th, 2011, 11:37 AM
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I thought Castrol GT LMA is synthetic

http://www.roverparts.com/Parts/2521.cfm
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  #15  
Old June 20th, 2011, 11:52 AM
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Do you all really spell "brakes" like "breaks"? Such irony.
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  #16  
Old June 20th, 2011, 01:21 PM
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Might be subliminal or maybe the problem is that they have been using "break fluid" instead of brake fluid
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  #17  
Old June 20th, 2011, 11:45 PM
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I'm still trying to figure out "Castro" "break" fluid. Is this stuff from Cuba?
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  #18  
Old February 1st, 2017, 06:36 PM
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how much clutch fluid do you need? i've used one big bottle already with barely anything coming out the bleed screw and the resevior still wants more
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