We go through a lot of brake fluid here at TSW - like several liters a year - and wanted to share our relatively new discovery - Wilwood EXP 600 rocks.

Dr. Mike found that it solved his 'spongy pedal syndrome', but I just have to say that it's really killer overall. We've run through tons of both Ate flavors, Motul, and a few others. But, Wilwood 600 is the best/cheaperish fluid out there that we have used for dual-purpose and track cars...

For a street application, it's overkill - Valvoline Synthetic Dot 3/4 is soooo cheap and available at any local auto parts store.

 

...sounds like that's next on my list.

I used Wilwood 570 this past weekend with good success. On the last lap of a 10/10ths 30 minute session I felt some sponginess in my brake pedal, yet stopping power was still there. Good to hear the Wilwood 600 is approved by Dr. Mike. Perhaps that extra bit of temp rating will help me out too.

 

Just a word of caution on the use of EXP.

The high boiling point will come with a shorter pot life. To maintain this level of performance the hygroscopic aspect of it are greater than 570 thus its contamination level will be quicker.

If you absolutely need it then be prepared to flush it well each and every weekend. If not done, the boiling point will be much lower than spec whereas running 570 would prove to be just as effective yet more stable and cost effective also. While I sell few bottles of the stuff a year I don't even stock EXP. Most users do fine with the 570 except for a couple of my local Southwest Tour buddies who run Tucson and Irwindale etc.

And don't overlook a spongy pedal potentially coming from the rear brakes.