what brake fluids are you all using.

[Janner_Sy]

IMO opinion my brake fluid was not up to the job for trackwork resulting after a few laps in spongy brakes that take an age to cool. i know this is also partly down to the pads.

ill be fitting new brakes next week i  think.

I want something that will be able to handle hard abuse.

I know this might seem tight, but i can trade price at halfords and they have a performance dot 5.1 brake fluid there. would that be ok.

iirc TT believes that you can damage ESP with different fluids. Anybody else back this up.

So as the title says what brake fluids are you using.

[tony_danza]

Motul RBF600 - had it in the MKV, MKIV and A3. Castrol SRF is good stuff too, proper race spec, although pricey.

I know TT says it *could* damage the ABS, but I've never heard of a failure and I'd rather cough up for one of those than put my car on its roof having run out of brakes.

[robern2]

Agreed, motul rb600 is the best in the business.

[DaveB@Vagbremtechnic]

RBF600 is very well regarded, it is a DOT4 fluid only because it doesnt comply with the freezing temp regs, its purely about the wet and dry boiling point for racing.

[Janner_Sy]

ive heard the motul is the way forward. No body any comment on the halfords or should be a know know.

Im going to go down and check the wet and dry boiling points and see how they compare. does anybody know the wet and dry boiling points of the OEM fluid.


Also on a side note. How long should it take a garage to fit a set of R32 345mm  brakes in place of the std 312mm and replace the fluid, just so I can gauge the labour cost. Id be happy to fit the brakes myself if they didnt need bleeding but since the whole fluid needs change ill get the whole lot paid for. just dont want to be ripped off.

[tony_danza]

Taken from Opie (who advertise on here, so I think you can get discount)

RBF 600 brake fluid is suitable for all types of hydraulic actuated-brake and clutch systems requiring a non-silicone synthetic fluid. RBF600 is specially designed to resist the high temperature of racing brake (steel or carbon) and clutch systems

Dry boiling point of 312 °C / 593 °F
Wet boiling point 216 °C / 420 °F

DOT5.1

Can't find dry at the moment
Wet 180°C / 356°F min

Halfrauds stuff, dunno, look at the figures - but I never skimp on brakes or tyres. Fitting wise, I wouldn't expect more than 2 hours labour.

[Hurdy]

I had my rears changed to S3 ones recently including the Motul and they charged £250 and that was including the discs, pads, calipers and the fluid change.....all in 1 hour too

[the bruce]

Make..........DOT Rating......dry boiling / wer boiling point


AP Racing 551 - DOT 3 - 527°F (275°C) / 302ºF (145ºC)

AP Racing 600 - DOT 3 - 590°F (310°C) / 410°F (210°C)

AP PRF Racing - DOT 4 - 608°F (320ºC) / 311°F (155ºC)

Ate SL6 - DOT4 + ISO6 -  509°F (265°C) / 347°F (175°C)

ATE Super Blue - DOT 4 - 536ºF (280ºC) / 396ºF (194ºC)

ATE Super 200 - DOT 4 - 536ºF (280ºC) / 382ºF (194ºC)

BMW OEM  - DOT 4 - 446*F (224°) / 311°F (156°)

Bosch - DOT 3 - 491ºF (255ºC) / 288ºF (142ºC)

Bosch - DOT 4 - 509ºF (265ºC) / 329ºF (165ºC)

Bosch - DOT 4+ - 536ºF (280ºC) / 356ºF (180ºC)

Brembo LCF 600+ - DOT 4 - 601ºF (316ºC) / 399ºF (204ºC)

Brembo EVO 500+ - DOT 4 - 520ºF (271ºC) / 336ºF (169ºC)

Castrol GT LMA - DOT 4 - 509ºF (265ºC) / 311ºF (155ºC)

Castrol SRF - DOT 4 - 590ºF (310ºC) / 518ºF (270ºC)

GS610 - DOT 4 - 610°F (321°C) / 421°F (216°C)

Gunk HD - DOT 4 - 510ºF (266ºC) / 311ºF (155ºC)

Motul DOT 5.1 - DOT 5.1 - 509ºF (265ºC) / 365ºF (185ºC)

Motul RBF 600 - DOT 4 - 594ºF (312ºC) / 421ºF (216ºC)

Motul RBF 660 - DOT 4 - 617ºF (325ºC) / 400ºF (204ºC)

Neo Super DOT16 - DOT 4 - 610°F (322°C) / 421°F (216°C)

Pentosin Super - DOT 4 - 500°F (260°C) / 338°F (170°C)

Pentosin RBF - DOT 5.1 - 572°F (300°C) / 392ºF (200°C)

Prospeed RS683 - DOT 4 - 683°F (360°C) / 439°F (224°C)

ValvolineProSyn - DOT 3/4 - 527ºF (275ºC) / 347ºF (175ºC)

Wilwood Hi-Temp 570 - DOT 3 - 570ºF (299ºC) / 284ºF (140ºC)

Wilwood EXP600 Plus - DOT 4 - 633ºF (330ºC) / 417ºF (213ºC)



VW has it's on J 1704 FMVS116 based 501.14. Ate SL6 does meet this standard.


Parameter    ......   DOT 3  .... DOT 4 .....  DOT 5.1
dry boiling point [°C]    ≥ 205        ≥ 230        ≥ 260
wet boiling point [°C]    ≥ 140        ≥ 155        ≥ 180
Viscosity at 100 °C [mm²/s]    ≥ 1,5    ≥ 1,5    ≥ 1,5
Viscosity at −40 °C [mm²/s] ≤ 1500 ≤ 1800  ≤ 900


Castrol SRF seems to have the highest boiling points, but it's very expensive.
Both Motul fluids and the both Ate Super 200 and Super Blue are the ones to go for.

"For race applications, vehicle owners will often alternate fluid flushes between Ate
Super Blue Racing Brake Fluid and Ate TYP 200 Amber Brake Fluid. The identical
specifications of the fluid and color difference make it easy to know when the old
fluid is completely flushed out of the system."

;)

[Tfsi_Mike]

Ate super blue racing. My car stops well on the hill and in tescos car park lol 

[Gti_Mad]

iv got the Motol RBF600 in  mine