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 Post subject: silicone brake fluid
PostPosted:Thu Sep 08, 2011 8:36 pm 
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Small Block

Joined:Mon Aug 15, 2011 8:51 pm
Posts:19
Car Details:'67 camaro coupe, 5.7 V8, Blue, left hand drive.
This car was built by GM in Antwerp, Belgium. I believe the cars came partly pre assembled from the US and were finished in Belgium.
It was originally white with a straight 6 (which i have stored in Belgium) but had a heavy duty V8 fitted when i bought it. This engine has since been replaced by a 350cui, 250 hp crate engine.
Location:North Yorkshire
has anyone ever tried silicone brake and/or clutch fluid?
since i am about to give the braking system on my first gen a good overhaul with new brake lines, hoses, master cylinder etc i thought this would be the time to make the change. It does not absorb water so it does not age like "ordinary" brake fluid and pistons are therefore less likely to stick and best of all, it is virtually inert so it will not make a mess of your nicely done paintjob in case it gets spilled. Allmost sounds to be too good to be true.
any thoughts please.
thanks,

kurt


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silicone brake fluid

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 Post subject: Re: silicone brake fluid
PostPosted:Thu Sep 08, 2011 10:17 pm 
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Big Block
User avatar

Joined:Fri Mar 19, 2010 1:35 am
Posts:2566
Car Details:79' camaro road & track day toy. 383 stroker, 5 speed TKO trans, lots of suspension stuff, 13" Vette brakes, 18" wheels.
Location:Luton
I've been recommneded not to use it, but rather use a high performance synthetic DOT 4 fluid with high boiling point...

I used to Halfords ESP last summer when I did my Vette brake swap, but I've got some Motul RBF600 racing fluid to go in when I do the rear brake swap in couple of months...

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“You only live once, but if you do it right, once is enough.”


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 Post subject: Re: silicone brake fluid
PostPosted:Fri Sep 09, 2011 9:56 pm 
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Big Block

Joined:Wed Jul 15, 2009 6:48 pm
Posts:493
Car Details:68 pontiac firebird coupe project car,my aim is a street friendly,lightly modified pro.touring style.
Lowered ,mild body mods,400 cu in SBC engine, Muncie 4speed, 10 bolt posi axle,disc front drum rear.
68 firebird convertible ( long term project) Stock resto/mod style ,400 pontiac th350
I've been told that silicone fluid is good for daily drivers/cruising but is not suited for performance driving.


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 Post subject: Re: silicone brake fluid
PostPosted:Sat Sep 10, 2011 3:16 pm 
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Big Block
User avatar

Joined:Thu Jul 10, 2008 10:41 am
Posts:827
Car Details:1968 Camaro Racing Car "Butch"
1968 Camaro Convertible 327"Camilla"
1979 AMC CJ7 Jeep 360V8
1980 BMW E21 Alpina B6 2.8
1991 BMW E30 HartgeH26
1958 as yet unrevealed sportsracer with chevV8
Location:Isle of Man and Inverness
We used to use AP Racing 550 or 600

really good racing Fluid but horribly hydroscopic- very much NOT suitable for daily driving ie leaving in car for any length of time. Needed to be flushed after every race meeting (advantge is that it had a huge boiling temp would that be 550c- I don't know)
http://www.apracing.com/info/index.asp? ... e+Fluid_41

Anyway we now use Castrol SRF = Silicone Racing Fluid- which seems to worka s well as the AP stuff but is NOT hydroscopic -(so you leave it in car for a season!)
http://www.lkperformance.co.uk/Brake_Fl ... uid/219245

I would have thought that a good Dot 4 or 5 would be fine for fast road use
Last point NEVER mix Silicone with non silicone based brake fluids

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TopCat
Secretary
Classic Camaro Club
Member of The Association of American Car Clubs UK
Email :tboles@strathnoon.co.uk Websites: http://www.classiccamaroclubuk.com and:
http://www.youtube.com/watch?v=IdhLJtR_ZY4


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 Post subject: Re: silicone brake fluid
PostPosted:Sat Sep 10, 2011 6:02 pm 
Offline
Big Block

Joined:Sat Oct 30, 2010 9:56 pm
Posts:268
Car Details:hi i have had my 70 z28 for bowt 5years now when i got it it needed a full resto an now am finaly geting to the end just have a few more bits to find and i cant wait till shes dne.
Location:north east
hi were abouts in northyorkshire are you because i live in malton near york :thumbup:


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 Post subject: Re: silicone brake fluid
PostPosted:Mon Sep 12, 2011 9:10 pm 
Offline
Small Block

Joined:Mon Aug 15, 2011 8:51 pm
Posts:19
Car Details:'67 camaro coupe, 5.7 V8, Blue, left hand drive.
This car was built by GM in Antwerp, Belgium. I believe the cars came partly pre assembled from the US and were finished in Belgium.
It was originally white with a straight 6 (which i have stored in Belgium) but had a heavy duty V8 fitted when i bought it. This engine has since been replaced by a 350cui, 250 hp crate engine.
Location:North Yorkshire
thanks for the replies.
Very mixed answers.
I will only be "cruising" and do not need the boiling point to be very high. The main reason i was interested in the silicone stuff was because it is not hydroscopic and because it does not affect paint when spilled.
Will have to have a good long think about this one.

to 70 z28: i have PM'ed you

Kurt


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 Post subject: Re: silicone brake fluid
PostPosted:Tue Sep 13, 2011 10:59 pm 
Offline
Big Block
User avatar

Joined:Thu Jul 10, 2008 10:41 am
Posts:827
Car Details:1968 Camaro Racing Car "Butch"
1968 Camaro Convertible 327"Camilla"
1979 AMC CJ7 Jeep 360V8
1980 BMW E21 Alpina B6 2.8
1991 BMW E30 HartgeH26
1958 as yet unrevealed sportsracer with chevV8
Location:Isle of Man and Inverness
Last point before I go to bed...................

there is just NOTHING worse than boiled brake fluid in your car in extremis

especially if it is a large and heavy car like a Camaro used in anger

believe me I know......................!

_________________
Kind Regards
TopCat
Secretary
Classic Camaro Club
Member of The Association of American Car Clubs UK
Email :tboles@strathnoon.co.uk Websites: http://www.classiccamaroclubuk.com and:
http://www.youtube.com/watch?v=IdhLJtR_ZY4


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 Post subject: Re: silicone brake fluid
PostPosted:Sun Oct 16, 2011 10:25 pm 
Offline
Big Block

Joined:Sun Jul 25, 2010 3:40 pm
Posts:206
Location:Roswell New Mexico
There's a good reason brake fluid is hygroscopic.
Any system that uses hydraulic fluid will suffer from atmospheric water getting into the fluid by condensation. If the water didn't mix with the fluid it would fall to the lowest point in the system, that is, the brake cylinders and/or calipers, then the corrosion starts. Remember oil floats on water so water obviously sinks in oil.
This is why you need to change your brake fluid periodically. So stick to what the factory uses.


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