[artey34]

Anyone having trouble finding SRF Brake Fluid? Amazon is out as well as many others. Not sure why

[c4racer]

use motul RBF600
When I installed StopTech brakes on my 71 that's what they recommend for street and track mixed use

Maybe Castrol is updating their formula and in a transition.

[UrbanKnight]

DOnt use Motul, it is not a substitute for SRF. SRF, Endless or brembo racing fluid are the right answers....

[c4racer]

Originally Posted by UrbanKnight

DOnt use Motul, it is not a substitute for SRF. SRF, Endless or brembo racing fluid are the right answers....

What is your basis for saying that ?

They both meet the federal dot 4 spec. So it is a valid replacement.
Similar thermal characteristics as well at least for dry boiling point which is what you care about.
If you track your car there better not be water in the lines and you better be bleeding the brakes after every event, IMHO.
The exact same listed dry boiling point as the brembo LCF600 and the SRF

The StopTech racing fluid is repackaged motul 600

https://www.tirerack.com/brakes/brak...ce+Brake+Fluid

[UrbanKnight]

I’m guessing you don’t track your car c4racer.

Motul boils on track in heavy cars like the vette and camaro. You also have to bleed often with motul. SRF is a once a year bleed.

Most people won’t notice the difference unless they track the cars. I track the car, it will only get SRF or brembo racing or endless if I run out of srf as the two latter have reduced tendency to absorb water even less than srf.

[Jsreo]

Tracked many times at several different tracks using motul 660 in several different cars including my SS and never had any problem with brake fade.

Based on my personal 1st hand experience (not something I read on the internet)it will work just fine

Ymmv

[artey34]

For moderate track use, Motul and SRF are good to use on track. I just use SRF so I can minimize the amounts of bleeds I need to do. Cost more up front, but its a once a year thing for me, and maybe a small bleed halfway through the season

[c4racer]

Originally Posted by artey34

For moderate track use, Motul and SRF are good to use on track. I just use SRF so I can minimize the amounts of bleeds I need to do. Cost more up front, but its a once a year thing for me, and maybe a small bleed halfway through the season

fair enough. I am not a bleed it once a year kinda guy!!

I don't track my Camaro no. I ran in race groups with NASA in the past and did HPDE events for maybe 10 years before that, so I know a thing or two about it!

I ran ATE SuperBlue in my street cars back then. Don't even remember what we ran in the race cars, honestly. But bled brakes every day, not just every track weekend. Sometimes every session if it was a long race - sometimes we would get 25-30min races. Bled after those for sure. But those cars were not heavy, had full on race pads, ducting, and driving technique using absolute maximum braking for as short a period as possible - we never had issues with fluid.

[c4racer]

Originally Posted by UrbanKnight

I’m guessing you don’t track your car c4racer.

Motul boils on track in heavy cars like the vette and camaro. You also have to bleed often with motul. SRF is a once a year bleed.

Most people won’t notice the difference unless they track the cars. I track the car, it will only get SRF or brembo racing or endless if I run out of srf as the two latter have reduced tendency to absorb water even less than srf.

A lot of this is driving style. As you learn to go faster you end up using the brakes for much shorter periods at closer to actual threshold, braking much later into a turn and especially with track oriented pads the fluid is not as likely to boil. In my experience anyway - I tracked many a heavy street car with superblue ATE over the years - which is very similar to Motul 600.

[c4racer]

searched on Jegs and it says ships from the mfg on 2/03 - so you may need to wait awhile! On the plus side you probably don't have any track days between now and then right?

[TheRealJA105]

Wet boiling point is more critical. Dry boiling is only applicable until you break the seal on the container.

[c4racer]

Originally Posted by TheRealJA105

Wet boiling point is more critical. Dry boiling is only applicable until you break the seal on the container.

not really - yes, it's a factor but really dependent on how often you bleed the system and a bunch of other factors - but let's just agree to disagree on that point....

[thescreensavers]

I would Sub Endless or Brembo HCT64T and drive on. SRF isn't the only popular fluid choice. Teams at 12hrs of Sebring were using SRF or Endless fluids.



If you boil any of these fluids your caliper seals are going to have a bad time.