Arnold

I am looking for a more performance orientated brake fluid for my car and the mechanic recommended the above fluid.Does anyone have any info on the product (the Castrol web site is quite useless).
Arnold
90C2 daily driver

Greg Fishman

Don't use the SRF, it is great stuff but totally unneccesary in a daily driver, it is used mostly by race teams that don't worry that it costs $60 a bottle, I doubt you would ever notice the difference in the higher boiling point. You can buy 5X as much ATE blue or gold for the same price. The ATE brake fluid should be fine for your car as would Motul,and others. Believe it or not I have also heard great things about Ford brake fluid.
FWIW, I use ATE in both my track and street cars, after trying other more expensive and less effective options I went back to what worked for me.

Greg

Bill Gregory

For street usage, I agree with Greg that Castrol SRF is overkill. ATE Super Blue or Gold (the DOT version of Super Blue) are excellent high performance brake fluids, amongst other choices. If you haven't already, you might want to read the article "brake fluid" on the tech.rennlist.com site under 911/964 brakes.

Arnold

Thanks for the replies.I ommitted to tell you that I do track my car 7-8 times a year and the biggest problem is brake fade,to the point that my lap times are much quicker during practice than during the measured time-trial.
I did read the tech articles and found them very informative.

Bill Gregory

Arnold,

I've used ATE Super Blue for several years of combination daily driver/track usage, and I do bleed my brakes fairly often - typically after every 2 track days. If you're having fading problems, there's two things you should do, first, bleed your brakes immediately before an event, and two, install brake cooling to get cooler air to the rotors. OG Racing makes an air cooling setup for 964's, which I plan to investigate myself. If that doesn't help, the next step would be to upgrade the fronts to big red calipers, and wider rotors, which will give you more heat sink capacity on the front wheels, which means your brake fluid will last longer.

Greg Fishman

Do a complete flush so that all the old fluid is out. Add some ducts to get some air to the brakes. On my 993 I didn't do anything fancy just ran some ducting from the front of the car to the suspension arm and directed it at the rotor, not perfect but anything that helps push air through will help. What pads are you using? If you are having to brake longer due to using a street pad it may be causing your temps to get too high. For my street car I use Hawk HPS and they don't squeal too bad and according to my vendor they work much better than street pads on the track. I know a lot of guys that use the Performace Friction in older 911's with good luck also.

Greg

CmackG

take the turns a little faster.... lol.