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Brake Fluids

Brake fluid must have a high boiling point to avoid vaporizing in the lines at high temperatures. Vaporization is a problem because vapor is highly compressible relative to liquid, and negates the hydraulic transfer of braking force - so the brakes will suddenly fail to stop the car. Boiling points are measured as "dry" and "wet" boiling points. Dry refers to fresh fluid from a new bottle. The wet boiling point refers to the fluid's boiling point after absorbing a certain amount of moisture. Most professionals agree that glycol-based brake fluid, (DOT 3, DOT 4, DOT 5.1) should be flushed/changed every 1–2 years under non-racing conditions and much more frequently in track or racing use.

Boiling points are not the only critical factors: compressibility and miscibility are other factors to consider. A fluid's quality is reflected in its DOT rating - DOT3, DOT4, and DOT5. Most commonly these ratings are used to compare boiling points but they are also graded on compressibility, and its viscosity at different temperatures. Some fluids are called racing fluids because even though they meet or exceed DOT standards they are not intended for road use. DOT-approved fluids must be colorless or amber except for DOT 5 silicone, which must be purple.

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Ate Typ 200 DOT4/5 Performance Brake Fluid

Higher operating temperatures than OE fluid, for street & light track use

Price: $11.49

18.50
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Performance Friction RH665 DOT4/5 Racing Brake Fluid

Guaranteed highest minimum dry boiling point of any DOT4 brake fluid

Price: $29.99

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Red Line RL-600 DOT4/5 Racing Brake Fluid

Full synthetic DOT 4 brake fluid by Red Line Oil - ideal for track or street

Price: $16.95

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Motul RBF 660 DOT4/5 Racing Brake Fluid

Racing fluid with very high wet and dry boiling points

Price: $31.99

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Motul RBF 600 DOT4/5 Racing Brake Fluid

Racing fluid with very high wet and dry boiling points

Price: $17.99

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Castrol SRF Synthetic Racing Brake Fluid

Silicone-based fluid repels water, creating extremely high boiling points

Price: $74.99

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Genuine BMW DOT4 ESL Low Viscosity Brake Fluid

LV DOT4 brake fluid for all new chassis starting with E60

Price: $4.75

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Ate SL6 DOT4 Low Viscosity Brake Fluid

LV DOT4 brake fluid for all new chassis starting with E60

Price: $11.20

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Pentosin DOT4 Low Viscosity Brake Fluid

LV DOT4 brake fluid for all new chassis starting with E60

Price: $13.07

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Brake Fluid Pocket Tester

For Testing Water Content of DOT3 & DOT4 Fluid

Price: $41.74

42.95
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