Castrol Heavy Duty DOT 3 Brake Fluid 500mL

Castrol Brake Fluid Heavy Duty DOT 3 is a premium polyglycol-based hydraulic fluid engineered to provide maximum braking efficiency, absolute safety, and reliable pedal responsiveness. This advanced low-moisture absorption fluid is custom-formulated for vehicle brake and clutch systems specifying a non-petroleum DOT 3 lubricant.

Product Description

Modern driving conditions put immense thermal stress on hydraulic braking systems. Under heavy loads or frequent braking, lower-quality fluids can drop in boiling point, leading to vapor lock, severe brake fade, and a dangerous spongy pedal feel. Castrol Heavy Duty DOT 3 combats this by delivering an exceptional minimum Equilibrium Reflex Boiling Point (ERBP) of 260°C when freshly filled. Fortified with professional-grade corrosion inhibitors, it actively shields critical internal metallic components from rust, scale, and chemical pitting, directly extending the service life of master cylinders, wheel cylinders, and calipers.

Key Features & Benefits

• High Thermal Stability: Boasts a minimum dry boiling point (ERBP) of 260°C when filled, ensuring unyielding hydraulic performance under extreme high-heat conditions.
• Vapor Lock Protection: Minimizes the risk of dangerous vapor lock, effectively preventing brake fade and maintaining a firm, reassuring pedal feel.
• All-System Safety: High-performance polyglycol matrix is engineered for absolute compatibility with rubber seal materials, stopping premature leaks, hardening, and swelling.
• Corrosion Protection: Infused with advanced corrosion inhibitors to safeguard both ferrous and non-ferrous internal metal components against oxidation.
• Multi-System Versatility: A highly versatile fluid engineered for both drum and disc braking configurations, as well as demanding manual transmission hydraulic clutch setups.

Product Specifications & Technical Data

• Volume: 500mL Bottle
• Fluid Composition: Premium Polyglycol Base (Non-Petroleum)
• Industry Standards: Exceeds FMVSS 116 DOT 3 | SAE J1703 | ISO 4925 Class 3
• Minimum Boiling Point (ERBP): 260°C (When filled)
• Part Number (MPN): 3377668

Recommended Application Guide: Castrol Heavy Duty DOT 3 Brake Fluid

Castrol Heavy Duty DOT 3 Brake Fluid is a highly stable, non-petroleum hydraulic medium. Below is a structured list of recommended mechanical and automotive application suggestions across passenger, commercial, and agricultural fleets:

Passenger Cars & Everyday Commuter Vehicles

• Disc & Drum Brake Systems: Ideal for standard passenger cars, vintage models, and everyday commuter vehicles requiring a dedicated DOT 3 specification.
• Light Commercial Fleets: Suited for local delivery vans and utility vehicles that operate in suburban environments and require consistent hydraulic pressure.

Regional Towing & Farm Equipment

• Light Agricultural Equipment: Provides a durable hydraulic barrier for older tractors, utility farm trailers, and support equipment operating across regional terrains.
• Light Towing Applications: Maintains pedal firmness and fluid stability for vehicles occasionally hauling light luggage or box trailers.

Hydraulic Clutch Mechanisms

• Manual Transmission Clutches: Highly recommended for manual gearboxes equipped with hydraulic clutch lines specifying a non-petroleum DOT 3 medium, ensuring smooth, predictable slave and master cylinder engagement.