[Skyman2112]

Well i guess BG DOT4 is not gonna cut it on a track day. Seems MOTUL 600 is a popular choice and not too hydroscopic. I only track a few times a year so i want a balance between high temp fluid and longevity between flushing.
Do i need to change the current, week old fluid right away now that i pushed it past the boiling point already? Will it be safe to wait till next track day?

[Og Neon]

If you boiled it and your pedal went to the floor it is done. You can bleed it, to get fresh fluid in the caliper, but the fluid itself does not sound like it is up to the task and will just boil again.

At track speeds, thats not the area where I want to save money/fluid or risk safety. I have been using Motul 600 for many years and it has been good. Bleeding brakes is part of the track day experience unfortunately.

[2SS Capt]

Originally Posted by Og Neon

If you boiled it and your pedal went to the floor it is done. You can bleed it, to get fresh fluid in the caliper, but the fluid itself does not sound like it is up to the task and will just boil again.

At track speeds, thats not the area where I want to save money/fluid or risk safety. I have been using Motul 600 for many years and it has been good. Bleeding brakes is part of the track day experience unfortunately.

Not a "Track Guy" but I agree with this 100%... Are you willing to risk your $50,000+ vehicle (and possibly your life) to save $100-$200 on brake fluid???

If it went "to the floor", it is DONE... Get it out of there and get some really good fluid in there...

[cdb95z28]

Originally Posted by Skyman2112

Well i guess BG DOT4 is not gonna cut it on a track day. Seems MOTUL 600 is a popular choice and not too hydroscopic. I only track a few times a year so i want a balance between high temp fluid and longevity between flushing.
Do i need to change the current, week old fluid right away now that i pushed it past the boiling point already? Will it be safe to wait till next track day?

Hell no, and neither will Motul be enough. Motul won't cut it with our heavy cars.

Castrol SRF, Brembo HTC64T, Endless RF650 ot Torque 700 are the only choices of high temp, high quality track ready brake fluids.

You will have to flush ALL the old fluid out. And do the ABS bleed procedure too.

High quality brake fluid is the cheapest insurance you will ever buy for a track day. There are many characteristics that define brake fluids and the above four choices will have what it needs for track day safety and fun.

Castrol SRF is usually the go-to for a good balance of cost and quality. The others are more expensive but have some different characteristics, for which does not make the SRF a lesser quality item.

Good reads:

https://thebuildjournal.com/tech-gui...view-analysis/


https://thebuildjournal.com/tech-gui...parison-guide/


You mentioned your pedal went to the floor. What car, pad, cooling setup do you have? Looks like a non- 1LE SS. Did you install the large brake cooling deflectors that came in the trunk of the car?

[USMUCL]

I agree Castrol SRF is the most popular, and it's what I use. But, I've never had a lick of issues with Motul 600.

As for the need to bleed, I will say this: I've had the pedal go soft with SRF, but it came back after cooldown. From what I understand, that means the fluid was at the brink and got hot enough to be "compressible," but not boil. Allegedly, if it boils, the pedal doesn't come back without bleeding it.

I bled it to be safe, anyway. I've bled with new fluid multiple times since (track dedicated car), and I've never done the ABS procedure on it.

[Osbornsm]

Originally Posted by USMUCL

I agree Castrol SRF is the most popular, and it's what I use. But, I've never had a lick of issues with Motul 600.

Castrol SRF ftw




I boiled Motul 600, and never went back.

[TransamGTA350]

Agree with flushing that fluid out of there and replacing with something better. I also use Castrol SRF and have gotten the brakes really hot on track and no issues with fluid boiling. I flush the SRF once per year in the off season and bleed the calipers each time I change brake pads.

[BoilerUP]

Some people prefer the pedal feel of Endless 650...but SRF is the easy button for all-season longevity AND let's be honest, as far as car fluids go its not THAT expensive.

[Skyman2112]

Originally Posted by cdb95z28

Hell no, and neither will Motul be enough. Motul won't cut it with our heavy cars.

Castrol SRF, Brembo HTC64T, Endless RF650 ot Torque 700 are the only choices of high temp, high quality track ready brake fluids.

You will have to flush ALL the old fluid out. And do the ABS bleed procedure too.

High quality brake fluid is the cheapest insurance you will ever buy for a track day. There are many characteristics that define brake fluids and the above four choices will have what it needs for track day safety and fun.

Castrol SRF is usually the go-to for a good balance of cost and quality. The others are more expensive but have some different characteristics, for which does not make the SRF a lesser quality item.

Good reads:

https://thebuildjournal.com/tech-gui...view-analysis/


https://thebuildjournal.com/tech-gui...parison-guide/


You mentioned your pedal went to the floor. What car, pad, cooling setup do you have? Looks like a non- 1LE SS. Did you install the large brake cooling deflectors that came in the trunk of the car?

Yes its a 2SS car with 1LE brake upgrade so semi metallic pads and larger rotors/ 6 piston calipers. I installed the cooling delfectors too. No brake fade whatsoever just a problem with the fluid.

[Skyman2112]

Great info guys now i know what fluid to use for the next track day. Flushing my calipers now untill i upgrade. Thanks for all the feedback!!

[Skyman2112]

Originally Posted by Osbornsm

Castrol SRF ftw




I boiled Motul 600, and never went back.

What track were you on, sounds intense your a good driver!!!

[kropscamaro16]

i used motul 660 never had any issues

[5.M0NSTER]

Castrol SRF ftw. I change every 2 years, and do 8-10 track days on a flush. I also drive my car 5-6 months a year as a daily

[N Camarolina]

Yep. Castrol SRF. No need to even bleed it during a season of 7 track days. I just flush it once per year, but have heard of others going a bit longer.

Can't quite say the same for Motul 600 that my Mustang friend insists on using. The fluid goes from clear to dark after 2 track days and he's replacing it at least once or twice a season. He hasn't any fluid boiling moments, but that might be because he replaces it frequently (and is ultimately spending more $ than if he'd use SRF).