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MOTORCRAFT PM21  
$14.48
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DOT 5.1 Brake Fluid
The right fluid for Ford, Lincoln and Mercury hydraulic systems.


Brake Fluid Comparison Chart

Fluid Type Compatible With Quality Chemical Composition Minimum Dry Boiling Point Minimum Wet Boiling Point
DOT 3
 DOT 3 Brake Systems Good Glycol Ether 401°F 284°F
DOT 4
 DOT 3 & DOT 4 Brake Systems Better Glycol Ether, Borate Ester 446°F 311°F
DOT 5.1
 DOT 3, DOT 4 & DOT 5.1 Brake Systems Best Glycol Ether, Borate Ester 518°F 374°F
DOT 5
 DOT 5 Brake Systems ONLY Specialty Silicone 500°F 356°F


How do I know if my brake fluid needs to be changed?

Brake fluid absorbs moisture. Water in brake fluid can boil during repeated or extended braking, creating air bubbles which reduce braking effectiveness. Water also can corrode metal brake lines. Change your brake fluid when:
  • A Brake Fluid Tester shows excess moisture
  • Fluid is dirty or rust-colored (it should be clear or translucent)
  • Brake pedal feels mushy or requires a lot of pressure (possible air bubbles)
  • You've reached the miles or years your owner's manual recommends for fluid changes
Not returnable once opened.
Videos

The Different Types of Brake Fluid

Additional Resources

Material Safety Data Sheet (MSDS)

Closeout Inventory Warranty Information:
Wholesaler Closeout items have a 30 day warranty (but still are covered by our Return Policy).

Regular Inventory Warranty Information:
24 months/unlimited miles; Motorcraft warranties are valid to U.S. customers only
Warranty Details