Johnsen's DOT 3 Brake Fluid 1 Gallon — High-Boiling 450°F Premium Synthetic

Johnsen's 2234 Premium DOT-3 Brake Fluid is a synthetic, high-boiling brake fluid formulated to meet DOT 3 standards and protect braking systems under heavy use.

This one-gallon container delivers a reliable DOT 3 fluid with a minimum dry boiling point of 450°F, engineered to exceed Federal and SAE requirements. It’s compatible with standard DOT 3 fluids and designed for use in modern disc, drum and ABS systems. Whether you’re topping off a daily driver, servicing a fleet vehicle, or prepping a project car, this formula prioritizes consistent hydraulic performance and corrosion protection.

How does Johnsen's 2234 perform under high-temperature conditions?

The formula is developed to withstand elevated operating temperatures with a minimum boiling point of 450°F, reducing the chance of vapor lock under intense braking. This supports steady pedal feel and braking responsiveness during prolonged or heavy use.

• Minimum dry boiling point: 450°F (230°C)
• Reduces risk of vapor formation at high heat
• Helps maintain hydraulic pressure during repeated stops

Is this fluid compatible with my vehicle’s braking system?

Johnsen's 2234 meets and exceeds DOT 3 and applicable Federal and SAE specifications, making it compatible with systems that specify DOT 3 brake fluid. It mixes safely with other DOT 3 fluids, so it can be used for topping off or full system replacement where DOT 3 is required.

• Meets/exceeds DOT 3 regulatory and SAE standards
• Mixes with DOT 3 approved brake fluids without issue
• Suitable for disc, drum, and ABS-equipped vehicles

What maintenance or application benefits can I expect?

This premium DOT 3 fluid focuses on stable hydraulic performance and extended protection against moisture-related degradation. Using a high-boiling fluid helps preserve pedal feel and reduces the frequency of brake fade during repeated heavy braking events.

• Improves pedal consistency under load
• Helps resist moisture absorption and corrosion
• Packaged in a one-gallon size for multiple servicing jobs

How should I store and handle this brake fluid?

Brake fluid absorbs moisture from air, so keep the container tightly sealed and store in a cool, dry place away from direct sunlight. Use clean tools and avoid contamination when transferring fluid to the brake system.

• Seal cap immediately after use to limit moisture uptake
• Store upright in a dry, temperature-stable environment
• Replace any opened fluid used beyond recommended service intervals

Who is this for? Johnsen's 2234 Premium DOT-3 Brake Fluid is aimed at mechanics, fleet managers, DIY enthusiasts and restoration specialists who need a dependable, high-boiling DOT 3 option in a bulk one-gallon size. It’s a practical choice for routine brake service, vehicles that see heavy braking, and shops that require a DOT 3 fluid meeting current Federal and SAE standards. This product is not intended to replace DOT 4 or DOT 5.1 where those higher specifications are specified—always follow your vehicle manufacturer’s recommendations.