5101 Brake Fluid Tester

Prevent brake-system failures with the Motive Products 5101 Brake Fluid Tester. This compact, handheld device quickly measures water content in DOT fluids from 0% up to 4% or more using a five-LED bar graph. Its built-in self-test ensures the electronics and sensors are functioning before every use. Simply insert the probe into fluid, press the test button, and read the water level at a glance—no lab equipment or test strips required. Durable and battery-powered, the 5101 is ideal for professional technicians and DIYers who demand accurate, on-the-spot brake-fluid health checks.

Key Features

• Five-LED Display: Clearly indicates water content levels (0%, 1%, 2%, 3%, 4%+)

• Built-In Self-Test: Verifies sensor and circuit integrity before each measurement

• Wide Fluid Compatibility: Works with all DOT 3, 4, 5.1 brake fluids

• Compact & Portable: Pocket-sized design for on-vehicle testing or shop use

• Long-Life Battery: Low-power electronics deliver hundreds of tests per set of AAA batteries

Benefits

• Enhanced Safety: Detect moisture before it corrodes components or lowers boiling point

• Time Savings: Get instant readings—no need for lab equipment or fluid samples

• Cost Efficiency: Identify brake-fluid changes only when needed, reducing waste

• User Confidence: Self-test feature ensures reliable results every time

• Versatile Use: Perfect for fleet maintenance, performance shops, and home garages alike.