All Things Mk5 > Performance Modifications
Brake upgrades (RS4)
xxx_mojo_xxx:
--- Quote from: Teutonic_Tamer on September 18, 2009, 06:25:41 pm ---
--- Quote from: xxx_mojo_xxx on September 18, 2009, 03:58:57 pm ---
--- Quote from: Teutonic_Tamer on September 18, 2009, 03:19:03 pm ---
--- Quote from: jabbalad on August 24, 2009, 12:38:43 am ---...It is for this very reason, that VW now demand that ONLY 501.14 fluid is used...
HTH
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Is that dot 5.1 brake fluid. Apologies in advance for my ignorance.
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cuprak1:
--- Quote from: mYGeL on August 23, 2009, 08:37:28 pm ---is the yellow ones the same as on the R32?
How did you get the badge on?
I have an Leon cupra Mk2 and want to fit a bodge wit a loggo but havent find anything to fit?
Regards// michael
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x2
Teutonic_Tamer:
--- Quote from: Msportman on September 19, 2009, 02:12:21 am ---
--- Quote from: Teutonic_Tamer on September 18, 2009, 07:26:27 pm ---
--- Quote from: Msportman on September 18, 2009, 07:09:36 pm ---Never had an issue with Motul RB600F...more than capable over the OE stuff.
Most of the people I know racing in the National Windcreen champ are using it and is used elsewhere in Msport.
Certainly a viable upgrade that won't harm your braking efficiency.
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The issue with RBF isn't anything to do with it being 'capable' or not, nor is it questioned about it's motorsport credentials. What is very highly questionable - is simply that it will fcuk up the ESP unit! Hence why I keep batting on about road cars - with their 'delicate' ESP units, which must ONLY be fed with genuine VW fluid. :indifferent:
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I've run Motul RB600F in my previous MKIV,RS4,VR6, MK2 16v Slick 50 race car....never an issue on the ESP and it's certainly of a the adequate viscosity to be reliable.
Mr Brockbank over at Badger 5 on Seatcupra net also swears by it. We've both been around the track and race scene for years and used it with good effect. I take it that the VW fluid has been upgraded in the last few years as the old VW fluid was a DOT 4 then went 5.1
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Like I have repeatedly stated - I am NOT deying its credentials when used on the race track.
One crucial point - which you repeatedly keep missing, is that Motul RBF is NOT suitable for ESP systems (from ALL road car makers), NOR is it approved by Volkswagen.
And for the genuine VW brake fluid - it has never been DOT5.1 rated. The original VW fluid was DOT3, and their current fluid is DOT4. But VW have completely DITCHED all DOT requirements. From 2006, the only 'standard' for brake fluid was VW501.14 - they completely abandoned all requirements for a DOT specification. BMW, Mercedes and Renault also abandoned DOT requirements, and now demand ISO Class rated fluids (either Class 4 or Class 6).
And don't get hung up on DOT ratings. I've repeatedly stated this - the genuine VW fluid (which is still DOT4 rated) outperforms (in terms of wet and dry boiling points) many DOT5.1 fluids. Remember, to achieve a DOT rating - a fluid just needs to pass with the minimum of thresholds a certain wet and dry boil points. However, some fluids will only just clear those thresholds, whilst others (including VWs own fluid) clears them by a huge margin.
Going back to the DOT ratings - these are American standards, and just like the American API standards for engine oils and gear oils, NO European manufacturer bothers with API standards - because they are woefully inadequate for high tech European engines & gearboxes - and Europe is going the same way with DOT specs for brake fluid.
--- Quote from: Msportman on September 19, 2009, 02:12:21 am ---As you comment SRF does the biz and retails for alot more but you can't discount Motul.
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Again, this is referring to MOTORSPORT applications. If you want to use non VW approved motorsport fluids in your own car, then that is your choice - but please be aware of potential problems to your ESP, and any such ESP problems would be denied warranty work.
Janner_Sy:
well that explains why i had horrendous brake travels after 3 laps of the ring with Oem fluid, but with motul RBF it stayed solid
chungster:
--- Quote from: Janner_Sy on October 19, 2010, 08:23:47 am ---well that explains why i had horrendous brake travels after 3 laps of the ring with Oem fluid, but with motul RBF it stayed solid
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That's interesting cos brake god dave told me the ring is not actually that hard on brakes, the corners are fast so it's more about carrying speed thru them than heavy braking. Apart from the first hairpin after flugplatz or whatever it's called at the beginning there's not much heavy braking after that in my view. Maybe it's your driving style and technique that needs modifying??
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