Brake Fluid Recommendation
 

Hey all,

Just seeing what brake fluids people are running. Any feedback (positive and negative) will be most appreciated, as I am quite n00b on the subject.

I'm looking at something that will withstand good abuse at the track. However, is it better to just use a factory fluid and change more often, or go to the expense of a better fluid?

Cheers,

John

Dot4

^^ +1

(....) or (.....)

Castrol SRF
Extreme performance, silicon ester based brake fluid with a very high boiling point. Formulated for use in drum and disc brakes in competitive motorsport, including motorcycles, rallying, touring and Formula 1. Not for use in systems where a mineral oil is specified. :D :D

Thanks Broomy.

[QUOTE=mr_psi]Dot4[/QUOTE]

I'm after a bit more info than just 'Dot 4'. I'm looking at specific brands people have used, dry boiling point, wet boiling points, how hygroscopic they are etc.

I use Elf Racing, working well so far.

High performance racing brake fluid
ELF HTX 115 / XT 3167
Exceeds the equilibrium dry and wet reflux boiling points of U.S. FMVS standard Nr. 116 DOT5.1
High protection against vapor lock phenomenon.
Excellent corrosion protection and rubber seal compatibility.
Boiling Point °C 260
Equilibrium reflux boiling point °C290
Vapor lock protection °C250
Vapor lock protection with 3.5% water 200
Wet equilibrium reflux boiling point °C 190 – 200
Auto ignition temperature °C> 300

Density at 20°C kg/m³ 1065
100°C visvosity mm²/s 1.5 min
-40°C viscosity cSt 1500 max
Miscible with all DOT fluids. Not miscible with silicone or silicate esters fluids.
Seals to be used: any classical brake system seals (respect FMVS Nr. 116 U.S. limits for seals).
Corrosion and compatibility: no specific limitation (exceed all DOT4 stand Nr. 116 specifications).
Safety and transport information: classified as not dangerous fluid.

I used elf in the old car and it was great. I am using AP in this one and it too has been great.

I am definately upgrading to braided brake hoses to get even better pedal feel.

brendon

I put in some Castrol Super Response or something along those lines. Dot 4 fluid. Got it for under $10 for 500ml.

Im happy with it for just a road car.

Theres another Castrol Dot 4 fluid in a red bottle. But its not as good apparently. for a couple buck more the silver bottle castrol fluid seems to do the job very well.

[QUOTE=Mister Two]I put in some Castrol Super Response or something along those lines. Dot 4 fluid. Got it for under $10 for 500ml.

Im happy with it for just a road car.

Theres another Castrol Dot 4 fluid in a red bottle. But its not as good apparently. for a couple buck more the silver bottle castrol fluid seems to do the job very well.[/QUOTE]

I use the same as well... i think the Castrol Super Response is actually Dot 4.1 but it doesn't make alot of difference. For sustained track work i really can't comment but i haven't had any fade or boiling issues from heavy street use and motorkhanas, although i do bleed the system before events.

Castrol Super Response Dot 4.1. (Silver Bottle)

No boiling/fade even after a hammering on the track (GC8 WRX) in conjunction with DBA 4000 discs and Ferodo DS2500 Pads.

Good stuff.

J

AP racing, no complaints thus far.

[QUOTE=WRXTASY]Castrol Super Response Dot 4.1. (Silver Bottle)

No boiling/fade even after a hammering on the track (GC8 WRX) in conjunction with DBA 4000 discs and Ferodo DS2500 Pads.

Good stuff.

J[/QUOTE]

thats the one and it is reasonably priced

Elf, AP, Brembo...

I use motul rbf600, which seems quite good

[QUOTE=WhiteRX]I use motul rbf600, which seems quite good[/QUOTE]

Good stuff this, especially for the price!
Boiling point is 312°C I believe?

RBF 600 312 C dry (new) 216 wet (2% moisture)
PBR racing fluid 312 dry 195 wet
GS610 330 dry 216 wet
AP600 300dry 210 wet

Castrol super response is still just a DOT 4 ..... no such thing as a 4.1

i use any off the shelf dot4, and flush regularly... seems to get very expensive otherwise.

Anyone know anywhere in Perth i can pickup some Motul RBF600 brake fluid tomorrow?

Pretty much nowhere. Depending where you are located, Tenagah or RMS on Monday morning.

John, my recommendation for brake fluid is just "change it often".

I use the Castrol Red stuff, have found no improvement going more expensive.
Have done that many changes, I buy 6 bottles whenever it's on special.
Use the money you save for braided brake hoses!

Motul RBF 600

Good brand like castrol motul or AP they all have a cheaper version than the top dollar fluid and as others have said change regularly coz all fluid degrades over time not just the cheaper stuff and put the savings into a set of braided lines.

Ended up getting a few bottles of Castrol Response Super Dot 4 .. Not as good as RBF600 on paper, but still half decent.

286C Dry, 184C Wet.

RBF600 is 312C Dry, 216 Wet.