5.1 is in general better than 4. Break fluid is so cheap anyway that there isn't much point in getting the cheapest alternative.
I've had good results with Motul RBF-600, but i've also had equally good results with a local budget car-parts chains "race" brake fluid, only downside is that it's so clear you can hardly se the level in the reservoir :p
Here's a table compiled by users on a racer forum i visit, prices are in Swedish krona.
Torr kokpunkt = Dry boiling point, Våt kokpunkt = Wet boiling point
![[Image: 2013-07-30-08-08-56_bromsvatska.jpg]](http://rejsa.nu/im/user/14343/2013-07-30-08-08-56_bromsvatska.jpg)
The one i run today is the Biltema Race 5.1
I've had good results with Motul RBF-600, but i've also had equally good results with a local budget car-parts chains "race" brake fluid, only downside is that it's so clear you can hardly se the level in the reservoir :p
Here's a table compiled by users on a racer forum i visit, prices are in Swedish krona.
Torr kokpunkt = Dry boiling point, Våt kokpunkt = Wet boiling point
The one i run today is the Biltema Race 5.1
Tinkerer of 306gti6 trackday racer, less stuff, more hard, more umpf, more stop.