F 250 2WD Pickup V8-7.3L DSL Turbo VIN F (1994)
Brake Fluid: Specifications
Brake Fluid Boiling Point Chart
One of the key aspects of brake fluid quality is the temperature at which it boils. A comparison of the boiling points for DOT 3 (in general), Ford DOT 3
and DOT 5 brake fluids is shown. If brake fluid boils in the brake system, it forms vapor which reduces the ability of the brake system to develop
hydraulic line pressure. If brake fluid boils, the system acts just like a system with air in the lines, except that it reverts to normal operation when the
brakes cool and the vapor condenses.
BRAKE FLUID BOILING POINTS MINIMUM FEDERAL SAFETY STANDARDS
Dry
Wet
Dry
Wet
DOT 3
401°
284°
205°
140°
DOT 5
500°
356°
260°
180°
Ford
550°
550°
288°
288°
DOT 3
Exceeds
Exceeds
Exceeds
Exceeds
Require-
Require-
Require-
Require-
ments
ments
ments
ments
NOTE: A newly opened can exceeds all minimum requirements.
Brake fluid absorbs moisture out of the air and must be stored in the original container with the cap securely fastened. If not, its moisture content will
increase and the boiling point will drop. Moisture also will be absorbed while the fluid is in the brake system, but a properly capped and sealed brake
master cylinder reservoir (2K478) will limit the rate at which this occurs.
NOTE: For more brake fluid information see Fundamentals and basics.