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View Full Version : Good Brake Fluid To use?



ThRaXaIR
13-05-2008, 09:54
ok so im totally upgrading my brake setup. is silkolene pro racer 2000 good to use for the fluid in a willy2?

cheers

MicKPM
13-05-2008, 10:04
Why would you want to spend that much on Brake Fluid? Use a standard Dot 5/5.1 and it'll be fine for hard road/track useage.

Lunner
13-05-2008, 10:43
I'm going for Castrol dot 4 super for mine

Always forget if its dot 5 or 5.1 which absorbs moisture like ****

kenny
13-05-2008, 10:46
DoT 5 is silicone based and not good for all applications, can have adverse affect on seals. DoT 5.1 is high spec and good for all including race temperatures.

kenny
13-05-2008, 10:47
DoT 5 is silicone based and not good for all applications, can have adverse affect on seals. DoT 5.1 is high spec and good for all including race temperatures.

MicKPM
13-05-2008, 10:59
I've run Dot 5 in all my cars and never had an issue with the fluid absorbing moisture... nor have I had any leaks that wasn't due to a cruddy old section of metal pipe that corroded.

northy
13-05-2008, 12:43
Carnt beat the halfords

stevie_b
13-05-2008, 15:53
I've run Dot 5 in all my cars and never had an issue with the fluid absorbing moisture.

Dot 5 is the one that is non-hygroscopic, so will not absorb water. I would think you would have been running 5.1 in a track car though?

kenny
13-05-2008, 18:18
If your experiences with Dot5 are good stick with it, but when I was looking for a good fluid to use in my 7.5ton motorhome in the Pyrenees I carried out a fair bit of research, I knew there were differences but these forum links were a decider. Ford say dont use it with M16 calipers, Honda will void a warrenty if it's used. Sure it doesn't absorb water, but that doesn't stop fluid entering the system as water droplets and gathering in calipers etc. The rule is do not mix them, Dot4 & 5.1 are glycol based, DoT5 is synthetic (silicone), they do not mix.
http://boardroom.wscc.co.uk/cgi-bin/ikonboard.cgi?act=ST;f=3;t=7237;hl=d

http://boardroom.wscc.co.uk/cgi-bin/ikonboard.cgi?act=ST;f=3;t=7237;hl=d

stevie_b
13-05-2008, 19:07
Yes. The only reason I can see for using DOT5 is if your vehicle is not for performance use (classic cars brought out now and then for a car show, for example) and you do so little miles in it that changing all the fluid every couple of years is a pain. Other than that I'd stick to DOT4 or DOT5.1 fluids. Something like Castrol SRF has a very good wet boiling point, so even as it goes 'off' a little as water is absorbed over time it still gives a better performance than most would.

ThRaXaIR
13-05-2008, 20:41
Why would you want to spend that much on Brake Fluid? Use a standard Dot 5/5.1 and it'll be fine for hard road/track useage.

that would be because i have no idea about brakes.

ok so you guys have confused me even further :P i'll sort something out.

cheers for the input!

Lunner
13-05-2008, 20:58
I'm sticking to castrol dot 4 super, £12 or so a ltr and i know its good, if i manage to boil it i'll upgrade, but **** paying £40/ltr for the castrol SRF(?) stuff

arj256
13-05-2008, 21:39
I use Castrol response super dot 4.
Cant fault it and is sensibly priced to.

http://www.williamsclio.co.uk/forum/viewtopic.php?t=22357 Its a nice all rounder on that chart for its price to.

stevie_b
13-05-2008, 22:40
I'm sticking to castrol dot 4 super, £12 or so a ltr and i know its good, if i manage to boil it i'll upgrade, but f**k paying £40/ltr for the castrol SRF(?) stuff

Fair point. The dry boiling points are pretty similar, and at that price you can afford to replace it more often so the lower wet boiling point compared to say, SRF, never becomes an issue. Will probably give that a go next time. Where do you get it from at £12 a litre - just any old High Street outlets?

Lunner
13-05-2008, 22:43
opie oils

ThRaXaIR
14-05-2008, 10:10
cool cheers.

MattyH16valver
14-05-2008, 20:09
I've just bought some of the Comma stuff....is this any good..or cheapo cheapo? :lol:

Northerner
16-05-2008, 10:22
The ones that I would recommend are:

Castrol SRF
ATE Super Blue
Motul 600

Northerner
16-05-2008, 10:24
However, the ones that I've listed above are for cars which will be used on track days....

For the road, a good quality DOT4 will suffice.

ThRaXaIR
16-05-2008, 11:02
you'll all be glad to know i went with the castrol dot 4 super.