Quicksilver DOT 5 Brake Fluid 12 oz — Silicone Formula, High Boil & Corrosion Resistance

Quicksilver 8M0128419 DOT 5 Brake Fluid is a silicone-based DOT 5 fluid in a 12 oz bottle engineered for powersports systems that specify DOT 5—do not mix with DOT 3 or DOT 4 fluids.

This DOT 5 formulation is built for recreational and performance vehicles that require silicone brake fluid. It delivers low compressibility for predictable pedal feel, strong corrosion resistance to protect braking components, and high boil points that help preserve performance under heat. This pack contains a 12-ounce bottle for topping off or small system fills; always check your vehicle manufacturer’s specifications before use.

What makes this DOT 5 fluid different from DOT 3 or DOT 4?

Quicksilver DOT 5 is silicone-based, whereas DOT 3 and DOT 4 are glycol-based, so they are chemically incompatible and must never be mixed. The silicone chemistry gives DOT 5 a different moisture-handling profile and makes it less hygroscopic, which can help reduce water absorption over time.

• Silicone formulation—keeps water separate rather than absorbing it
• Not miscible with DOT 3 or DOT 4—flush system before switching
• Stable viscosity across temperature ranges for consistent feel

How does it perform under heat and heavy use?

This brake fluid is designed with high thermal resistance: a dry boil point around 500°F and a wet boil point near 356°F, exceeding common requirements for DOT 5 fluids. Those elevated boil points help prevent vapor lock and maintain pedal firmness during spirited use, towing, or extended downhill runs.

• Approximately 500°F dry boil point for hot-system protection
• About 356°F wet boil point for performance after moisture exposure
• Low compressibility to preserve braking responsiveness under load

Will it protect my brake components from corrosion?

Yes—this formula includes corrosion inhibitors to help guard calipers, lines, and master cylinders against rust and deterioration. Using the recommended fluid helps extend component life compared with neglected systems, but regular maintenance and fluid checks remain important.

• Corrosion inhibitors protect metal brake parts
• Meets MIL-PRF-46176 and MIL-PRF-46176B performance standards
• Compatible with manufacturer DOT 5 recommendations when used correctly

How should I use and store the 12 oz bottle?

The 12-ounce container is suited for topping off systems that already use DOT 5 or for small-capacity brake systems on powersport vehicles. Keep the bottle tightly sealed when not in use, store it in a cool, dry place away from contaminants, and avoid introducing glycol-based fluids into a DOT 5 system.

• Use only in systems specified for DOT 5 fluid
• Keep container sealed and store in a cool, dry location
• Flush and clean the system before switching fluid types

Who this is for: Quicksilver DOT 5 Brake Fluid is aimed at riders and owners of powersport machines, classic vehicles, and specialty brakes that require silicone-based DOT 5 fluid. It’s appropriate for enthusiasts seeking stable pedal feel, elevated boil resistance, and added corrosion protection in small-volume applications. If your vehicle’s manual specifies DOT 5, this 12 oz bottle provides a convenient, manufacturer-grade option—if your system calls for DOT 3 or DOT 4, choose a compatible glycol-based fluid instead.