Brake Fluid & Coolant Tester 12V Boiling Point DOT3/4/5/5.1

A 12V brake fluid and coolant tester used to check boiling point and help assess fluid condition before replacement is due. It gives a quick way to test automotive brake fluid and coolant, helping spot when fluid performance may be dropping during routine vehicle maintenance.

Used in garages, workshops and servicing bays, it is also handy for anyone carrying out their own vehicle maintenance at home. The fast 60 to 90 second test time is useful when checking several vehicles in one day, during regular servicing, or when inspecting brake fluid condition as part of safety checks. For mechanics and DIY users alike, it helps with practical maintenance decisions rather than relying on age alone.

Power comes from a 12V car battery using the supplied external battery clips, so there is no need for a mains connection when working around the vehicle. The tester is suitable for DOT3, DOT4, DOT5 and DOT5.1 brake fluids, giving it broad use across common braking systems. A flexible tube helps with handling during testing, while the LCD display makes readings easier to follow. The operating range of 0°C to 50°C suits normal workshop and garage conditions, and the quick test cycle is useful for regular maintenance work where time matters.

Brake fluid coolant tester specifications

• Function: Tests the boiling point of brake fluid and coolant to help assess fluid condition.
• Compatibility: Suitable for DOT3, DOT4, DOT5 and DOT5.1 brake fluids.
• Power supply: Runs from a 12V car battery using external battery clips.
• Test time: Provides results in around 90 seconds for brake fluid and 60 seconds for coolant.
• Handling: Flexible tube and LCD display help make testing easier around the vehicle.
• Brake fluid measuring range: 180-320°C (356-608°F) ±5%.
• Coolant measuring range: 100-180°C (212-356°F) ±3%.
• Detection range: 90°C to 350°C.
• Current: 10A at 12V DC.
• Sample volume: 20-25ml.

A practical choice for regular vehicle servicing and maintenance checks.