Johnsen's DOT-3 Brake Fluid — 1 Gallon, Synthetic High‑Boil 450°F for Disc, Drum & ABS

Johnsen's 2234 Premium DOT-3 Brake Fluid is a synthetic, high‑performance DOT 3 brake fluid sold in a 1‑gallon container with a minimum boiling point of 450°F, formulated for use in disc, drum and ABS brake systems.

When you need a reliable, shop-ready brake fluid that meets industry standards, Johnsen's 2234 delivers a synthetic DOT 3 formula engineered to resist vapor lock and maintain predictable hydraulic performance under heavy use. It meets and exceeds DOT 3 and all applicable Federal and SAE specifications, and it mixes with other DOT 3 fluids for easy top-up or system service. This 1‑gallon size is convenient for home mechanics and professional garages that service multiple vehicles or perform complete system flushes.

How does this brake fluid stand up to high temperatures?

Johnsen's 2234 has a minimum dry boiling point of 450°F, so it tolerates the heat generated during repeated heavy braking and towing. A higher boiling point reduces the risk of vapor formation in the brake lines, preserving pedal feel and braking responsiveness.

• Minimum dry boiling point: 450°F (230°C) for improved heat resistance
• Formulated to reduce vapor lock under repeated thermal stress
• Maintains hydraulic pressure and pedal firmness at elevated temperatures

Can I mix Johnsen's 2234 with other brake fluids?

Yes — this fluid is compatible with all DOT 3 approved brake fluids, allowing safe mixing for topping off the reservoir or blending during a service. Avoid mixing with DOT 4 or DOT 5 silicone fluids; always follow vehicle manufacturer recommendations for fluid type.

• Compatible with all DOT 3 fluids for convenient servicing
• Not compatible with DOT 5 silicone-based fluids
• Follow manufacturer guidance when switching fluid types

Is Johnsen's 2234 suitable for modern ABS and mixed braking systems?

Designed for use in disc, drum and ABS systems, this DOT 3 formulation meets the performance characteristics required by modern hydraulic braking designs. It provides the stable viscosity and corrosion protection necessary for anti‑lock modulator components and caliper operation.

• Approved for disc, drum and ABS-equipped vehicles
• Stable viscosity supports consistent ABS modulation and braking feedback
• Includes additives to protect internal system components from wear and corrosion

What makes the 1‑gallon size practical for users?

The 1‑gallon container is sized for multiple brake services, full system flushes, or frequent fleet maintenance without frequent repurchasing. It reduces packaging waste compared with multiple small bottles and is easy to store in a workshop or garage.

• One gallon covers several vehicle services or complete system flushes
• Ideal for home mechanics, fleets, and professional shops
• Sturdy packaging simplifies pouring and storage between uses

Who this product is for: Johnsen's 2234 Premium DOT‑3 Brake Fluid is intended for DIY mechanics, professional technicians, and fleet managers who need a dependable, specification‑compliant DOT 3 fluid in a bulk size. Choose it when your vehicle owner’s manual specifies DOT 3, when you require a higher boiling point for towing or performance driving, or when maintaining ABS and conventional hydraulic brake systems across multiple vehicles.