[Og Neon]

I've been running Motul 600 for over a decade and I do about 15+ track days a year with no issues. I usually flush at the start of the year and bleed midway and maybe at the end depending on the tracks.

Don't let them scare you off, Motul is just fine. Regardless of the fluid, if you have bad braking habits, then any fluid will boil. I see a lot of new track guys getting on the brakes way early and riding them thru the braking zone which starts to overheat things. Additionally, PTM will heat up the rears a lot if you are ham fisting it and it is constantly engaging.

[Skyman2112]

Originally Posted by 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

Wow thats great ill check it out!

[SpeZ]

Motul RBF 600 is the best in terms of highest boiling point if fluid is free of water or fresh.
Castrol SRF is close, but both are high tier.

I personally use a "mid" tier for a lot less money and fairly high boiling point of >500°F.
Just fine as well on track, even with frequent high speed braking. 160+ mph -> 25.
The stock pads overheat way before you are able to cook the brake fluid.

Most importantly is to keep it fresh, so 1-2 changes each year. (depending on use and weather)

[m6-lt1]

If you don’t want to bleed before every event or during the season I’d just switch to castrol. I had the same thing happen to me that poster number 5 had happen however I’ve learned not to do a cool down lap. It literally gets firm again by the next corner. Still, I don’t like that the pedal gets momentarily soft so I am switching to endless rbf650. I think that’s also a fluid that doesn’t require changing that often. Motul requires bleeding during the season.

[USMUCL]

Originally Posted by m6-lt1

If you don’t want to bleed before every event or during the season I’d just switch to castrol. I had the same thing happen to me that poster number 5 had happen however I’ve learned not to do a cool down lap. It literally gets firm again by the next corner. Still, I don’t like that the pedal gets momentarily soft so I am switching to endless rbf650. I think that’s also a fluid that doesn’t require changing that often. Motul requires bleeding during the season.

Probably worth noting I was on Sport 1 when this occurred; in theory, the computer was using the brakes for stability and it contributed to the hot fluid. When it happened, it also turned my pretty red calipers black.

I have since progressed down the list to RACE

[m6-lt1]

Originally Posted by USMUCL

Probably worth noting I was on Sport 1 when this occurred; in theory, the computer was using the brakes for stability and it contributed to the hot fluid. When it happened, it also turned my pretty red calipers black.

I have since progressed down the list to RACE

I was in sport 1 as well but my calipers are still red. Looks like we had two different things happen then and you definitely needed to do the cool down. I think in my case the fluid was just getting more compressible as it was getting hotter which I was reading happens more with castrol versus endless. One of the posters in this thread had told me that about castrol as well.