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

AUTOOL AS501 Mini Brake Fluid Tester

The AUTOOL AS501 is a compact digital brake fluid tester that detects moisture content across six common brake fluid types. Brake fluid absorbs moisture over time, lowering its boiling point, so a quick measured result helps you recommend fluid replacement with confidence.

Who It Suits

Workshops, inspection stations, fleet servicers and mobile mechanics who want a faster, more reliable check than test strips.

Key Features

• Tests six fluid types – DOT3, DOT4, DOT5, DOT5.1, ENV4 and ENV6
• Results in about 10 seconds using pressure-boost testing technology and a built-in intelligent algorithm for stable, accurate moisture readings
• Flexible 260mm stainless steel gooseneck probe reaches awkward reservoirs
• Audible alarm and LED indicators warn when moisture exceeds safe limits
• 1.8-inch HD backlit display clear in strong light or dim conditions
• Compact and light (about 150g) for the toolbox
• Battery powered by 2 x AA for portability

Technical Specifications

• Power supply: 2 x AA 1.5V batteries
• Probe length: about 260mm
• Product dimensions: 48 x 36 x 168mm
• Operating temperature: -10°C to 50°C
• Storage temperature: -20°C to 60°C
• Weight: about 150g

Package Contents

• AUTOOL AS501 main unit
• Stainless steel gooseneck probe