Blwnc6

Going to the track next weekend and want to replace the brake fluid. What fluid would be use to for occasional track use and street use?
Tim

Kracka

Any quality DOT4 is a good call. ATE TYP 200 is my personal go-to fluid and what I have in my Z51, but Autozone carries Pentosin and Bosch which are both excellent fluids and readily available locally. Even a basic Prestone DOT4 has pretty good boiling points which is what I have in my DD.

Blwnc6

Thanks. Ordered ATE 200.

2014GT

I personally use RBF 660 in all vehicles I track and may switch to Castrol SRF, but any dot4 is likely all you need

juanvaldez

I use the ATE 200, a little better than what you will find a Autozone and not crazy expensive.

village idiot

This is NOT adequate for the track.

RBF 600 or 660.

0JDP Tech

We've had great luck and success with Motul fluid. Send me a PM with any questions. We carry it and use it constantly. Great DOT4 fluid!

Blwnc6

why is it not adequate for the track. It’s only 50 degrees difference

village idiot

In reference to "any DOT4" from autozone type fluid. ATE is probably the lowest I'd use. Definitely would use something better if you're on cup tires.

spearfish25

SRF. The wet boiling point is realistically where you’ll be and SRF has by far the highest.

2014GT

Castrol SRF>RBF660>RBF600>ATE200>all other DOT4

More important than what fluid is used is that your fluid is fresh. IF you are pushing the car hard and experienced on slicks, then you at the very least want rbf660 and would be best of with srf, it’s not cheap though

Bill Dearborn

Not all DOT4 Fluids are the same and some DOT3 Fluids like Ford's brake fluid have better dry boiling point specs (500 degrees) than some DOT4 fluids.

Castrol may not be the best fluid for all Drivers. It has a high wet boiling point but it doesn't have the highest dry boiling point. If you want to settle on a 519 degree wet boiling point and basically getting away without bleeding fluid between events then Castrol SRF is probably for you. However, if you want the highest boiling point when you are out on track then maybe you should focus on dry boiling point since there are fluids that have 25 to 75 degree higher dry boiling points.

Check this web site for a Brake Fluid Comparison Chart:
https://thebuildjournal.com/tech-gui...parison-guide/

I copied the chart and made it into a PDF file and it is attached to this post.

I also used Excel to Sort the Chart two different ways and generated a PDF file ranking the fluid by dry boiling point and another file ranking them by low boiling point.

Bill

Blwnc6

Thank you for the information. This will be my second track event in the Z06. I do run cup tires. I am a rookie at this for sure. Unfortunately at the first track event I did run the car hard enough to get the wonderful over heat and reduced power warning. Hope it is better this time as the temp should be cooler.

village idiot

That and its expensive AF. I run 600 on my GS at the track that is probably the harshest on brakes in the country. But I also bleed my brakes before every track day. With a powerbleeder it takes 20 min.


Well, that has nothing to do with the brake fluid. Add the 2017 cooler and it should help a ton.

TAK2TRK

Completly agree with your scale. I run SRF and would not run anything else available. It seems to heat cycle better as well with track use. I had to swap RBF more far more frequently, about every three weekends on the long end. While SRF appears to be way more expensive, note that it’s sold in a 1L bottle while others are 500mL, so it’s not as bad as you think. And when you can run more then twice the cycles, it’s actually economical if you value your time.

village idiot

The problem is, bleeding your brakes only takes about 300mls so the rest gets wasted. I'd run SRF if it came in smaller quantities; ideally, 0.3L or so

spearfish25

Put it in mason jars after opening it.

thebishman

I’ve used them all over the years. I’d never use the ATE fluid; it’s just not robust enough for a car as fast as ours on the track. Motul make a great fluid, but I only use Castrol SRF. It’s not that expensive when you realize that SRF comes in a 1 litre bottle instead of 1/2 litre and will not need to be bled so often.

Bish

russZ06

Rob Willis

Torque brake fluid is also good stuff. Over the years I've used both the blue/amber ATE, Castrol SRF, and now Torque.