AUTOOL AS501 - Mini Brake Fluid Tester (DOT3 / DOT4 / DOT5 / DOT5.1 / ENV4 / ENV6)

AUTOOL AS501 - Mini Brake Fluid Tester (DOT3 / DOT4 / DOT5 / DOT5.1 / ENV4 / ENV6)

Turn fluid-condition checks into measurable workshop information.

The AUTOOL AS501 Mini Brake Fluid Tester provides a quick digital assessment of brake-fluid condition across several commonly used fluid types. Its compact design and backlit display make it useful for routine servicing, workshop inspections and preventative brake-system maintenance.

Why This Tool Is Useful

Designed to give technicians clearer, repeatable test information during diagnosis instead of relying on guesswork or visual checks alone.

Key Features

• The AUTOOL AS501 is a compact, professional brake fluid tester that quickly and accurately detects moisture content in all major brake fluid types. Designed for workshop or mobile service use, it gives technicians a fast, clear indication of fluid quality — helping prevent brake fade and costly system failures.
• Key Features
• Tests six major brake fluid types: DOT3, DOT4, DOT5, DOT5.1, ENV4, ENV6
• Flexible 260 mm stainless-steel probe reaches difficult reservoir locations
• Audible alarm & LED indicators warn when moisture levels exceed safe limits
• Supported Fluids: DOT3, DOT4, DOT5, DOT5.1, ENV4, ENV6
• Automotive workshops & inspection stations
• Technicians checking fluid moisture before service
• Vehicle inspection & fleet management applications
• Mobile mechanics and performance tuners
• Why Choose the AUTOOL AS501
• Brake fluid naturally absorbs moisture over time, lowering its boiling point and endangering braking performance. The AS501 provides a fast, reliable measurement so you can recommend fluid replacement with confidence. It’s the professional alternative to unreliable test strips — compact, fast, and precise.
• AUTOOL AS501 main unit
• Stainless-steel gooseneck probe
• Batteries (included in some packages)

Specifications

• Quick results: Moisture content displayed in around 10 seconds
• 1.8-inch backlit display for clear visibility in low-light conditions
• Compact & lightweight – perfect for toolboxes or mobile mechanics
• Battery powered (2× AA) for full portability
• Probe Length: ~260 mm flexible stainless gooseneck
• Display: 1.8 – 2.8″ LCD backlit screen
• Supports all major brake fluid standards ✔ 10-second moisture test ✔ HD backlit display ✔ Audible alarm warning ✔ Portable and workshop-ready
• Digital accuracy: Pressure-boost sensor technology ensures precise readings
• Power Supply: 2× AA 1.5 V batteries
• Operating Temperature: -10 °C – 50 °C
• Storage Temperature: -20 °C – 60 °C
• Weight: ~150 g