1. Introduction
This manual provides essential information for the proper use and handling of StopTech STR 600 High Performance DOT 4 Brake Fluid. StopTech STR 600 is engineered to optimize brake system performance, particularly at high operating temperatures encountered in high-performance street driving and racing applications. It is a DOT 4 motor vehicle brake fluid designed to maintain excellent viscosity, lubricity, and non-compressibility, guarding against boiling and subsequent loss of efficiency.
StopTech STR 600 conforms to and exceeds the current specification of U.S. FMVSS 116 (§ 571.116) DOT 4, is road legal, and compatible with modern ABS and other vehicle dynamic control systems. It is mixable with all DOT 3 and 4 products.

Image 1: StopTech STR 600 DOT 4 Brake Fluid in its distinctive black and red 500ml metal can, featuring the StopTech Racing logo and brake caliper graphics.
2. Safety Information
WARNING: Brake fluid is corrosive and can cause serious injury or damage if not handled properly. Read and understand all safety precautions before use.
- Eye Contact: In case of contact with eyes, flush immediately with plenty of water for at least 15 minutes. Seek medical attention.
- Skin Contact: Wash thoroughly with soap and water. Remove contaminated clothing.
- Ingestion: Do NOT induce vomiting. Seek immediate medical attention.
- Inhalation: If inhaled, move to fresh air. If breathing is difficult, administer oxygen. Seek medical attention.
- Keep Out of Reach of Children: Store in a secure location away from children and pets.
- Flammability: Brake fluid is combustible. Keep away from open flames, sparks, and hot surfaces.
- Vehicle Paint: Brake fluid can damage vehicle paint. Immediately wipe off any spills with a clean, damp cloth and rinse the area with water.
- Disposal: Dispose of used brake fluid according to local environmental regulations. Do not pour into drains or dispose of with household waste.
3. Setup and Preparation
Before replacing or adding brake fluid, ensure the vehicle is on a level surface and the engine is off. It is recommended to consult your vehicle's service manual for specific brake fluid replacement procedures and intervals.
- Gather Tools: You will need appropriate wrenches, a brake bleeding kit (if performing a full flush), clean rags, and personal protective equipment (safety glasses, gloves).
- Protect Surfaces: Cover painted surfaces around the brake fluid reservoir to prevent accidental spills from damaging paint.
- Open Reservoir: Carefully open the brake fluid reservoir cap. Avoid introducing dirt or moisture into the system.
- Inspect Old Fluid: Note the color and condition of the existing brake fluid. Dark or cloudy fluid indicates contamination and a need for a full flush.
Note: If you are unsure about performing brake fluid replacement, it is highly recommended to seek assistance from a qualified automotive technician.
4. Operating Instructions (Fluid Replacement/Addition)
Follow these general steps for adding or replacing brake fluid. Always refer to your vehicle's specific service manual for detailed instructions.
- Adding Fluid: If the fluid level is low, carefully pour StopTech STR 600 brake fluid into the reservoir up to the "MAX" line. Do not overfill.
- Full Fluid Flush (Bleeding):
- Begin with the wheel furthest from the master cylinder (typically the rear passenger side).
- Attach a clear hose to the bleed screw and place the other end in a container with a small amount of new brake fluid.
- Have an assistant slowly press the brake pedal down and hold it.
- Open the bleed screw to allow fluid and air to escape. Close the bleed screw before the pedal reaches the floor.
- Repeat this process until clean, air-bubble-free fluid flows from the bleed screw.
- Continuously monitor and refill the master cylinder reservoir with fresh StopTech STR 600 fluid to prevent air from entering the system.
- Repeat for all remaining wheels, moving closer to the master cylinder (e.g., rear driver, front passenger, front driver).
- Secure Reservoir: Once complete, securely replace the brake fluid reservoir cap.
- Test Brakes: Pump the brake pedal several times to ensure a firm pedal feel before driving. Test brakes at low speed in a safe area.
5. Maintenance and Storage
- Fluid Level Check: Regularly check your brake fluid level as part of routine vehicle maintenance. Maintain the fluid level between the "MIN" and "MAX" marks on the reservoir.
- Fluid Replacement Interval: Brake fluid absorbs moisture over time, which lowers its boiling point and can lead to brake fade. Consult your vehicle's manufacturer recommendations for fluid replacement intervals, typically every 1-2 years, or more frequently for high-performance and racing applications.
- Storage: Store StopTech STR 600 brake fluid in its original, tightly sealed metal container in a cool, dry place. The metal container provides up to 25% longer shelf life compared to typical plastic bottles. Avoid exposure to direct sunlight and extreme temperatures.
- Contamination: Never mix brake fluid with petroleum products (e.g., engine oil, power steering fluid) as this will severely damage the brake system. Ensure all tools and containers used are clean and dry.
6. Troubleshooting
- Spongy Brake Pedal: This often indicates air in the brake lines. Re-bleed the brake system thoroughly, ensuring no air bubbles are present.
- Low Brake Fluid Warning Light: Check the fluid level in the reservoir. If low, add StopTech STR 600 fluid. If the light persists after filling, inspect for leaks in the brake system.
- Brake Fade (Loss of Braking Power): This can be caused by overheated brake fluid (boiling). Ensure proper fluid type is used and consider more frequent fluid changes for aggressive driving. If the issue persists, inspect brake components for wear.
- Fluid Discoloration: Dark or cloudy fluid suggests contamination or degradation. A full system flush and refill with fresh StopTech STR 600 is recommended.
For persistent issues, consult a certified automotive mechanic.
7. Product Specifications
| Feature | Specification |
|---|---|
| Product Name | StopTech STR 600 High Performance DOT 4 Brake Fluid |
| Model Number | STR 600 |
| Fluid Type | DOT 4 Motor Vehicle Brake Fluid |
| Volume | 500 mL |
| Typical Dry Boiling Point | 594°F (312°C) |
| Typical Wet Boiling Point | 404°F (206°C) |
| Minimum Wet Boiling Point | 383°F (195°C) |
| Container Type | Metal Can (for extended shelf life) |
| Compatibility | Compatible with modern ABS and other vehicle dynamic control systems. Mixable with all DOT 3 and 4 products. |
| Standards | Conforms to and exceeds U.S. FMVSS 116 (§ 571.116) DOT 4. |
8. Warranty Information
Specific warranty details for StopTech STR 600 High Performance DOT 4 Brake Fluid are provided by the manufacturer. Please refer to the official StopTech website or contact their customer service for the most current and comprehensive warranty information. Keep your purchase receipt as proof of purchase.
9. Customer Support
For technical assistance, product inquiries, or support regarding StopTech STR 600 High Performance DOT 4 Brake Fluid, please contact StopTech directly through their official website or authorized distributors.
Official Website: www.stoptech.com (Please note: This is a placeholder link, verify the actual manufacturer website for support.)
Always ensure that any work on your vehicle's braking system is performed by individuals with appropriate knowledge and experience.