600 Re-branded as Radi-CAL™ R2 - Silver bottle with Blue cap.
R2 fluid has a dry boiling point exceeding 594°F and has been developed for racing applications where high temperatures are being experienced, e.g. when using carbon discs and the ultimate in brake fluid performance is required.
It should be noted that before using R2 fluid, any existing brake fluid should be drained completely from the brake system. The system should be thoroughly purged with new R2 and can be filled completely with new R2 fluid.