Autool AS506 | Brake Fluid Tester
Warranty handled directly by AsTools
Warranty handled directly by AsTools
We handle warranty cases ourselves, quickly and without the intervention of the manufacturer. Thanks to our own parts inventory and technical expertise, we can usually help you immediately. Only in exceptional cases do we still send the product to the supplier.
2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This way, you are assured of long-lasting quality and service.
Easy returns via Returnless
Easy returns via Returnless
Returns are easy via Returnless. Register your return online and choose your own shipping method. Return costs are at your own expense.
Professional customer service
Professional customer service
Our experts are ready to help you quickly and professionally, both online and in our physical store. Questions? Feel free to contact us!
The Autool AS506 is a brake fluid tester that measures the boiling point of various types of brake fluid. The tester uses heat detection technology to determine both the dry and wet boiling points, establishing the quality and presence of water in the fluid. The results are displayed on an OLED display and the device operates on a 12V vehicle battery.
This brake fluid tester features two test modes: a "Normal mode" for general brake fluid types and a "Brand mode" for specific brands. The test procedure takes 16 seconds. The device is compatible with a wide range of brake fluids, including DOT3, DOT4, DOT4+, DOT4ESP, DOT5, DOT5.1, DOT5.1ESP, ENV4, and ENV6. A built-in overheat protection safeguards the internal components during testing.
Application and functionality:
The tester is designed to determine the condition of brake fluid by measuring the boiling point. This provides an indication of the water content and the need for replacement.
- Boiling point measurement: The device measures the dry boiling point (for new fluid) and the wet boiling point (for fluid in use) to assess quality.
- Dual test mode: The tester offers a "Normal mode" for testing generic DOT types and a "Brand mode" for specific brake fluid brands.
- Wide compatibility: Supports testing of 9 different types of brake fluid and 14 specific brands, including ATE, Bosch, Brembo, Changcheng, Delphi, Ferodo, Fuchs, Kunlun, Mobil, Monarch, Motul, Textar, Total, and TRW.
- Fast detection: The full test cycle is completed within 16 seconds, after which the result is immediately displayed on the screen.
- OLED display: The bright screen shows the selected mode, temperature, boiling point result, and battery voltage.
- Overheat protection: A built-in feature prevents damage to the tester from excessive heat during the testing process.
Package Contents:
- 1x Autool AS506 brake fluid tester
- 1x Manual
Technical specifications:
| Specification | Description |
|---|---|
| Brand | Autool |
| Model | AS506 |
| Operating voltage | 12V (minimum 10V) |
| Detection time | 16 seconds |
| Operating temperature range | 0°C to 50°C |
| Wet boiling point measurement range | 140°C to 205°C |
| Dry boiling point measurement range | 160°C to 320°C |
| Supported fluid types | DOT3, DOT4, DOT4+, DOT4ESP, DOT5, DOT5.1, DOT5.1ESP, ENV4, ENV6 |
| Supported brands | ATE, Bosch, Brembo, Changcheng, Delphi, Ferodo, Fuchs, Kunlun, Mobil, Monarch, Motul, Textar, Total, TRW |
| Dimensions | Ø88 x 146 mm |
| Package Contents weight | 0.6 kg |










