Hi-Temp brake fluid

[joeg]

Dan--Highly dependent on the car's weight, mechanical braking ability, speed, the track and the driver (as well as how fresh you keep the stuff).

You want the best fluids, but stuff that is a known quality.

You will get lots of opinions, but unless you have experienced fluid boil, I would say that you are OK with what you have.

I personally like a good DOT 4 and use Genuine Mercedes Benz Brake Fluid, but I am pretty sure its composition is ATE Gold.

[Greg Amy]

Dan, if you're boiling ATE Blue/Amber-Gold (I use them alternating, to see when I've flushed out the old stuff) then you need to add cooling ducting. - GA

[dj10]

if you're boiling ATE Blue/Amber-Gold ........your using your bakes way to much. :~)

[Greg Amy]

Touche!

[JeffYoung]

I agree with Greg and Dan.

I've got a seriously brake challenged car, and run Castrol SRF just for the added small bit of protection. BUT, if you are boiling a "good" (550 plus dry boiling temp) fluid like ATE, Motul or Castrol, then you have a cooling issue you need to address.

Note also that the dry boiling point is less important than the wet, according to the "experts" anyway. Most brake fluid starts to absorb water the minute you crack it open and the dry boiling point isn't really that relevant.

[wepsbee]

Great, now how do I know if I am boiling the fluid. I assume using the brakes too much is only an issue if you are going fast enough to begin with.

[wepsbee]

Excellent help. I will get the ATE. I notice there are 2 colors to help with flushes. Great idea!!

[Greg Amy]

...and that coming from a guy with a Brit car...doesn't that thing have finned front brake drums... (yes, yes, I know: the Brits invented the disc brake. Too bad they kept it secret for so long so the Yanks wouldn't steal it!)

Actually though, Jeff, I'd disagree with you on the wet v. dry; for race cars where we change the fluid often (one would assume), the "wet" rarely comes into significance. IIRC, the DOT ratings for "wet" are based on a test with the assumption that a car that lives for a decade without ever changing the fluid; I seem to recall the sample for testing "wet" is with the fluid humidified to something like 3.5% water!!!

Since I bleed the brakes every race weekend, I tend to personally ignore the wet rating. - GA