Hi, just wanted to know what everyone uses for their brake fluid.

I was thinking of using SUPER BLUE RACING fluid. Or is the stock fluid decent?

I will only be using the car on road. But gets driven very hard.

Thanks.

 

Stock fluid is great and not very hygroscopic. Probably a better choice for street driving than the usual tracking oriented fluids like Motul 600 or Castrol SRF. I use the latter, but only because I track the car. SRF is very hygroscopic and needs to be replaced more frequently as a result.

 

MOTUL RBF600 is perfectly streetable too. I've used that down to negative temperatures, never had an issue with it.

RBF660 is a little too much for cold temperatures, never had any experience with Castrol SRF.

I would upgrade to at least MOTUL DOT 5.1, or RBF600.

ATF Super Blue, I've used it before, and it felt fine. However, be aware, it ends up dying the inside of your lines, so when you go to flush it when a different type of fluid later, it comes out dyed blue.

 

For road use OEM is your best option as it's the proper low viscosity.

 

We've used a lot of different fluids on cars that are nearly exclusively driven on the street.

ATE Super Blue works, we just hate how it stains everything though.

OEM fluid works.

If you're looking for a slight bump in performance, while having zero compromise on the street, we have had great experience with the Brembo Racing LCF600 Plus. We use this on nearly all of the street and track cars that come through our shop. In specific instances, we move to a motorsport brake fluid for the brakes and drivers that need it.

 

I've not experienced any brake fade in multiple track days with the OEM fluid.

 

I've had zero problems using SRF on the street

 

This is my post about brake fluid. As a result, I use the original fluid MB 331.0 DOT 4+
https://mbworld.org/forums/c63-amg-w...-question.html

 

^ This. The MB brake fluid is easily as good as the ATE Super Blue / Typ 200 when it comes to dry & wet boiling points, is less hygroscopic and has the proper (lower) viscosity. You would essentially be "downgrading".