Brake Fluid

[scotiamr2t]

Looking to get some opinions on brake fluid, car is a track/race car with little to no road use.

Previously i used ATE super blue and never had any issues, once that was discontinued i changed to Castrol SRF. I had 2 occasions, during longer stints that the pedal went soft with the SRF so wasn't that impressed.

What Fluid are others using?

 

[JamesBryan]

Surprised at that because SRF is about the best you can get penmouth:

Sure it wasn't the pad material compressing? Some do when really hot.

 

[scotiamr2t]

Surprised at that because SRF is about the best you can get penmouth:

Sure it wasn't the pad material compressing? Some do when really hot.

I should hope not, its on DS1.11's front an 2500 rears

 

[JamesBryan]

I should hope not, its on DS1.11's front an 2500 rears

Ahh right.

Weird, because everyone i know swears by it.

Motul RBF660 is good but SRF is better.

 

[scotiamr2t]

@JamesBryan as do a lot of people i know hence i changed to it! Was a bit miffed when it happened, re-bled the brakes just in case and the probelm re-occured

Although the issue only arose when out for longer stints. Never had an issue with ATE superblue..........Only change except fluid was i went from CL-RC8 to DS1.11 pads

I have 1 Litre of the SRF left i may try it again and see how i get on with it when testing

 

[JamesBryan]

I suppose everyone brakes differently.

 

[Djw John]

I didn't like superblue bar how easy bleeding was when swapping between that and normal coloured stuff! More than happy with Motul RBF600 and the DS1.11 I run now

 

[Chrisgti6]

If you liked the super blue, just get the none dyed equivalent? Same specs etc, it just doesn't have the blue colour.

 

[-Jamie-]

Try some Endless RF, I swear by it now after trying pretty much every other fluid out there. The Endless is the only stuff that gives me a firm, consistent pedal regardless of how long im out or how how the brakes get

 

[-Rob]

Try some Endless RF, I swear by it now after trying pretty much every other fluid out there. The Endless is the only stuff that gives me a firm, consistent pedal regardless of how long im out or how how the brakes get

Second this. Really rate the Endless stuff - just needs changing every year.

 

[Vaughan]

I just put SRF into my 172 for occasional track days.
It’s the “wet” boiling temperature that’s most important because the fluid absorbs moisture.
The STF’s wet temperature is 270C which is higher than the dry boiling temp of most other fluids.

If the SRF is boiling then you need to look at cooling.

 

[scotiamr2t]

Car has brake cooling ducts. No idea what was causing the issue but I’ll try the SRF again as I still have 1 litte

If I don’t get on with it I’ll change it out