Radi-CAL R3 fluid was previously known as PFR660 – the fluid itself has not changed at all.
R3 is suitable for all top levels of motorsport where abnormal temperatures are experienced. It should be noted that before using R3 fluid, any existing brake fluid should be drained completely from the brake system. The system should be thoroughly purged with new R3 and can be filled completely with new R3.
R3 has advanced moisture resistance properties, low levels of viscosity (for ease of bleeding), low levels of compressibility and meets DOT4 specifications.
With the inroduction of an inhibitor R3 can now be used with magnesium components.
Supplied in 500ml bottles.