trackday brake fluid

[Guest STiEVO]

got a trackday what do i need for brake fluid. need to know by tomorrow so i can book it in to get replaced on friday . cheers

[Guest boostcut]

get the silicon valvoline shizz... its not hygroscopic and it has 3 times the boiling point of 5.1. its expensive tho... 60 bux for a litre.

[Guest STiEVO]

 boostcut said:

get the silicon valvoline shizz... its not hygroscopic and it has 3 times the boiling point of 5.1. its expensive tho... 60 bux for a litre.

sweet how many liters do ineed ?

[Optical]

use motul rbf600, everyone who tracks their car does and it's good stuff.

$30/500mls from bnt, racebrakes etc

a full system bleed is about 500mls, but to be safe prob bled through a bit mroe than that

[Guest boostcut]

 STiEVO']

[quote name='boostcut said:

get the silicon valvoline shizz... its not hygroscopic and it has 3 times the boiling point of 5.1. its expensive tho... 60 bux for a litre.

/quote]

sweet how many liters do ineed ?

bout 5-700 mls depending on how much you flush thru... and you have some spare

[Guest STiEVO]

 Optical said:

use motul rbf600, everyone who tracks their car does and it's good stuff.

$30/500mls from bnt, racebrakes etc

a full system bleed is about 500mls, but to be safe prob bled through a bit mroe than that

so 1 ltr will be enuff then .will go to bnt tomorrow and book it in somewhere for thursday/ friday.cheers guys much appreciated

[newsuba]

Stick to a good glycol fluid like Motul RBF600 or ELF ETX115.

Don't bother with silicone fluids, they are a waste of time and money.

-While they do not absorb water they do not stop water from entering the brake system and can allow water to gather at the lowest points in the lines, promoting corrosion.

-Silicone fluids are more compressible than glycol, leading to a spongyfeeling brake pedal.

-You can't mix silicone fluids with glycol fluids.

-Not compatible with most ABS systems.

[funkytown]

i use RBF660..

different to the 600 listed above i think. tis the shiz

similar price to above mentioned tho $30 / 500mls from BNT

[Pappu1]

motul rpf600

used that on the track and swear by it - they are really good and even with my pads smoking away, the feel was cosistant and there was really good breaking as far as spongy pedals go..

dunno the price but as quoted above they are not bad..

i had my entire system flushed - took like just over a litre ...

fully recomended bro!!

[Guest STiEVO]

just bought 2 litres of rbf600 for 80$ inclusive. can take any i dont use back. the guy recommended it gets a good flush to flush the existing fluid out.silicon vs synthetic or something to that nature.

[newsuba]

Two 500ml bottles are usually enough.

;D

[Pappu1]

 STiEVO said:

just bought 2 litres of rbf600 for 80$ inclusive. can take any i dont use back. the guy recommended it gets a good flush to flush the existing fluid out.silicon vs synthetic or something to that nature.

dude that is cheap!!! yea a full flush be the way to go!!

will def see major improvements for sure

[QRAF]

give driftrex a pm he has a machine that can bleed the brake without any mess, done a few members here.

it's also his job so he has all the bits and pieces to do it.

[nztintin]

i also have the tools needed to do it in my shed, i've done mine numerous times now, also had some brake fluid i could ave sold you cheap as! looks like i'll have to put it in my car now! (adds one more job to the list)

[Guest]

Silicon fluid is for extreme racing vehicle that are highly serviced.

it's only benifit is its boiling point

Silicon fluid attacks the rubber seals causing them to swell over time (usually only a couple of months)

The Super Saloon i crew on we change all brake seals at the start of, and again twice during our 6mth race season

[Guest boostcut]

Silicone Brake Fluid (DOT 5)

Non Hygroscopic -Does not absorb water- thus eliminating corrosion and deterioration.

Dry boiling point exceeds 600 deg.

Compatiable with DOT 3, DOT 4, and foreign brake fluids.

Compatiable with natural and synthetic rubber compounds.

Never needs replacement.Doesn't harm painted surfaces.

Lubricates moving parts.

Simple changeover - just perform normal brake bleeding job.

Packaged in 8 oz., 32 oz., 5 gallon and 55 gallon drums.

what seals are you using?

[Guest]

Using std seals for Tilton cylinders

I'm very interested in the fluid you mention, What brand?

Interesting also that silicon will mix with std fluid !!

[Guest boostcut]

http://www.lreracing.com/silicone_brake_fluid.htm

boss uses it in his race car, kids go kart, even the boat trailer...

[newsuba]

A good dose of marketing BS there...

:

While silicon fluid does not absorb water it does allow it to pool at the low points of your hardlines, where it can cause corrossion.

It might not eat rubber parts but silicone fluid can seep through micro-fissures not big enough for glycol fluids to escape through.

Never needs replacement ?

So your boss never changes the fluid in his race car ?

[Guest boostcut]

i agree. he does change fluid but, never had a problem with seals.

it may be different from glycol to silicone but that is the exact stuff he uses, comes from U.S.A and is relatively cheep. he uses AP brakes so maybe they have a different compound seal Rick?

[Guest]

Still interested how it can mix with gycol based fluids

Have you tried mixing the two in a bowl?

Have never heard of this fluid, an funny that they say it doesn't harm rubber compounds (all silicon I have seen does)

Maybe they are onto a winner

[Guest boostcut]

no but i will do first thing tuesday morning... im pretty interested in it myself now.... if it dont mix... firstly i appologize to you and then send a long email to the company that sell us this product.

[Guest]

all good, no stress

[Guest STiEVO]

im getting confused , have i used the wrong fluid?

[QRAF]

also i have 5.1 dot brake fluid? is that much different that dot 5? he had to bleed through a good amount of brake fluid as i had boiled it and it smelt wrong then he put in the race fluid and bleed the brakes.

the brake fluid i have now is clear as and the braking difference is noticeable but that could be the new rotors/pads as well.

I also hope i haven't used the wrong fluid.