Brake Fluid

[dsmith968]

I am about to change the brake fluid in my 993 C2. I was thinking about using some high performance fluid instead of the normal stuff. I need it for light track use and only really contemplated it because the standard stuff in my previous 968 CS was not really up to the job on track days.

Can anyone suggest a quality branded product for my requirements ??

[London GT3]

Recommend Castrol SRF. I have used it in racing cars and track day cars and have not found anything better. It is expensive (relatively speaking) and has to be changed more regularly (say once a year max).

Good Luck

[Raven Flyer]

Unless you plan to flush the system with alcohol first, SRF is a waste of money.

Fluids like AP500 or Silkolene Pro Race have the highest rated wet boiling points, are 24 month fluids and will give you a brake pedal so hard, you'll think its broken. Both are available from any good motor bike shops.

These fluids are easy to install too. Syringe out the reservoir until its empty, so as not to mix with the old fluid, fill with new fluid and bleed each wheel, starting with the one furthest from the reservoir. Bleed until you are sure you have good new fluid coming through and lock the nipple off whilst the pedal is on its slow downstroke at each wheel. Keep checking the reservoir level, so that it doesn't run dry during the job, or you will have to start again on that wheel.

By the way, the DOT rating refers to the resistance to moisture, not the boiling point. Some DOT 5 fluids are always spongy, the good DOT 4 fluids feel like rock.

[johnsuper]

if you are interested to try Japanese stuff, i use a brand IDI, with wet and dry boiling points at 338 and 242 celsius. Castrol is crap.

[aasc]

ATE Blue is very good for track use & a fraction of the price of SRF.

[paulburrell]

Second the recommendation for ATE Super Blue can be bought from eurocarparts for about £12 a litre. Never let me down on track in nearly 10 years.

[bluesatin]

Always used castrol SRF - works fine for braking from 180mph to 40 at bruntingthorpe!. Dry boiling point 310c Wet boiling point 270c-!

[theturbs]

Another recommendation for ATE - awesome stuff.