TOTAL BRAKE FLUID DOT-3 HBF-3 DOT-3 181940Description Hydraulic Synthetic fluid recommended for brake circuits and clutch systems in all vehicles using synthetic fluid and requiring DOT 4 level. Miscible with other synthetic fluids of chemical type such as DOT 3, DOT 4 and DOT 5. 1. Not miscible with mineral base fluids of LHM type or silicon based fluids. Very high dry and wet boiling points adjusted to ever increasing temperatures encountered in braking systems : prevents from vapour lock.