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AUTOOL AS506 Automobile Brake Fluid Tester
AUTOOL AS506 Automobile Brake Fluid Tester
AUTOOL AS506 Automobile Brake Fluid Tester
AUTOOL AS506 Automobile Brake Fluid Tester
AUTOOL AS506 Automobile Brake Fluid Tester
AUTOOL AS506 Automobile Brake Fluid Tester
AUTOOL AS506 Automobile Brake Fluid Tester
  1. AUTOOL AS506 Automobile Brake Fluid Tester
  2. AUTOOL AS506 Automobile Brake Fluid Tester
  3. AUTOOL AS506 Automobile Brake Fluid Tester
  4. AUTOOL AS506 Automobile Brake Fluid Tester
  5. AUTOOL AS506 Automobile Brake Fluid Tester
  6. AUTOOL AS506 Automobile Brake Fluid Tester
  7. AUTOOL AS506 Automobile Brake Fluid Tester

AUTOOL AS506 Automobile Brake Fluid Tester

(27 customer reviews)

US$71.90

Key Features
  • Water Content Test
  • 16-Second Check
  • Fluid Compatibility
Key Features
☰ REQUEST BULK / B2B QUOTERequest B2B Quote
Secure checkoutFast supportBulk ready
AUTOOL AS506

Product Overview

The AUTOOL AS506 is a handheld automotive brake fluid tester designed to help judge whether brake fluid should be replaced by checking boiling point performance. It supports DOT 3, DOT 4, DOT4+, DOT4ESP, DOT 5, DOT 5.1, DOT5.1ESP, ENV4, and ENV6 brake fluids, provides Normal Mode and Brand Mode, and delivers a test result in about 16 seconds.

Boiling Point Test Normal / Brand Mode 16s Detection 12V Battery Power
0-320°CTest Range
9 TypesBrake Fluid
14 BrandsBrand References
3 YearsWarranty
AUTOOL AS506 brake fluid boiling point tester main product image Click to enlarge
AUTOOL AS506 brake fluid tester with 3 year warranty image Click to enlarge
Before You Order And Use

Before You Order And Use

AS506 heats brake fluid during the boiling point test. Review the sample volume, 12V power rule, hot-fluid warning, and post-test handling instructions before use.

Use 12V Battery Power

Clamp the tester to a 12V vehicle battery. The working voltage is 12V, with a minimum of 10V. Do not reverse the positive and negative clamps or short-circuit with the vehicle.

Use Enough Brake Fluid

Fill the beaker with more than 40ml and not more than 50ml of brake fluid. Do not test without enough fluid, because empty boiling may damage the test stick.

Wear Eye Protection

Wear goggles and avoid splashing brake fluid into your eyes. Follow the brake fluid manufacturer’s safety data sheet and the vehicle service manual.

Avoid Burns After Testing

The test stick and fluid become hot after the boiling point test. Do not touch them directly after testing.

Do Not Reuse Tested Fluid

Do not pour tested brake fluid back into the reservoir. The fluid structure has been changed by boiling, and reuse may affect driving safety.

Brake Fluid Only

AS506 is designed for brake fluid detection. Do not use it for other liquids or non-automotive purposes.

Safety Reminder

  • Use by professional technicians or trained service personnel only.
  • Keep the tester away from children and untrained users.
  • If the same brake fluid sample is tested repeatedly, different results may appear because the sample has already been boiled and changed.
  • After testing, remove the unit vertically to avoid spilling brake fluid.
Key Features

Key Features

AS506 focuses on boiling point detection for brake fluid maintenance decisions, with dual test modes, fast detection, clear OLED prompts, wide brake fluid coverage, and reverse polarity protection.

Dual Mode Selection

Use Normal Mode for general brake fluid type selection or Brand Mode when you want to reference one of the supported common brake fluid brands.

16-Second Fast Detection

Press and hold the S button for about 16 seconds. The tester displays live fluid temperature and completes the result after the progress bar finishes.

Boiling Point Measurement

AS506 quickly obtains the minimum boiling point of brake fluid and provides official dry and wet boiling point values for reference.

Wide Brake Fluid Coverage

Supports DOT3, DOT4, DOT4+, DOT4ESP, DOT5, DOT5.1, DOT5.1ESP, ENV4, and ENV6 brake fluid types.

Clear OLED Interface

The screen prompts mode selection, brake fluid type, voltage, test status, live temperature, and final test result for easier operation.

No Consumable Test Sticks

The tester does not require consumable test sticks for routine testing, helping reduce repeated testing costs when maintained correctly.

Reverse Polarity Protection

Battery polarity reverse protection helps reduce risk during 12V battery connection, but users should still connect red to positive and black to negative.

3-Year Warranty

For eligible non-human damage cases, AUTOOL provides 3-year warranty support and lifetime maintenance service guidance.

Workshop-Friendly Kit

The package includes the main tester, beakers, injection sampler, hose, carry case, user manual, and retail box as shown in the Packing List image.

AUTOOL AS506 dual mode options normal mode and brand mode Click to enlarge
AUTOOL AS506 operation interface display for normal mode and brand mode Click to enlarge
AUTOOL AS506 16 second fast brake fluid boiling point test Click to enlarge
AUTOOL AS506 supported brake fluid types and brand mode references Click to enlarge
Compatibility And Fitment

Compatibility And Fitment

AS506 supports 9 brake fluid types and two test modes, so users can test by general brake fluid type or by built-in brand reference when applicable.

Supported Brake Fluid Types

DOT3, DOT4, DOT4+, DOT4ESP, DOT5, DOT5.1, DOT5.1ESP, ENV4, and ENV6.

Normal Mode

Use Normal Mode when you want to select the brake fluid type directly, such as DOT3, DOT4, DOT5, or DOT5.1.

Brand Mode

Use Brand Mode when testing by built-in brand reference. Select the brand and corresponding brake fluid type before testing.

14 Brand References

Brand Mode covers ATE, TRW, BOSCH, MOBIL, TOTAL, FUCHS, MOTUL, DELPHI, KUNLUN, FERODO, BREMBO, TEXTAR, MONARCH, and CHANGCHENG.

How To Use

How To Use

Use the injection sampler to collect brake fluid, connect AS506 to a 12V battery, select the proper mode and fluid type, then press and hold the S button for about 16 seconds to complete the test.

Collect Brake Fluid

Use the injection sampler to suck up brake fluid and fill the beaker. Keep the sample above the 40ml scale and not more than 50ml.

Connect 12V Battery Power

Connect the red clamp to battery positive and the black clamp to battery negative. The tester powers on automatically after correct connection.

Select Mode And Fluid Type

Select Normal Mode or Brand Mode, then choose the brand and brake fluid type such as DOT3, DOT4, DOT5, or DOT5.1.

Immerse The Test Stick

Put the test stick into the beaker and make sure the sampling hole is immersed in the brake fluid. Bleed air bubbles from the test head cavity before testing.

Press And Hold S For 16s

After entering the ready interface, press and hold the S button for about 16 seconds. Wait until the progress bar is complete to obtain the result.

Use Notes

  • Do not shake, knock, or drop the test head or heating bar.
  • The live fluid temperature and battery voltage are displayed during testing.
  • Remove the unit vertically after testing to avoid spilling brake fluid.
  • Do not reuse the tested brake fluid in the brake fluid reservoir.
  • After testing, empty the brake fluid and use about 50ml of water to clean residual brake fluid from the test stick.
AUTOOL AS506 brake fluid tester operation steps Click to enlarge
Specifications

AUTOOL AS506 Product Specifications

AS506 is a compact 12V brake fluid boiling point tester with 16-second detection, 0-320°C measurement capability, 0-50°C working temperature range, and a Ø88 × 146mm main unit body.

Detection
ProductAUTOOL AS506 Brake Fluid Boiling Point Tester
Detection ObjectAutomotive brake fluid boiling point
Detection TechnologyFlash point heating technology
Detection TimeAbout 16 seconds
Test Mode SelectionNormal Mode / Brand Mode
Temperature Unit Switching°C / °F
Brake Fluid Range
Applicable Brake Fluid TypesDOT3, DOT4, DOT4+, DOT4ESP, DOT5, DOT5.1, DOT5.1ESP, ENV4, ENV6
Wet Boiling Point Range140-205°C / 284-401°F ±5%
Dry Boiling Point Range160-320°C / 320-608°F
Temperature Measurement Range0-320°C / 0-608°F
Power And Operation
Working Voltage12V, minimum 10V
Working Temperature Range0-50°C
DisplayOLED display
ControlsTAB key and START / S key
ProtectionBattery polarity reverse protection
Size And Package
Main Unit DimensionsØ88 × 146mm / Ø3.46 × 5.75in
Package Weight0.6kg
Warranty3 years for eligible non-human damage cases; lifetime maintenance support
AUTOOL AS506 specifications structure dimensions and parts diagram Click to enlarge
Detection
ProductAUTOOL AS506 Brake Fluid Boiling Point Tester
Detection ObjectAutomotive brake fluid boiling point
Detection TechnologyFlash point heating technology
Detection TimeAbout 16 seconds
Test Mode SelectionNormal Mode / Brand Mode
Temperature Unit Switching°C / °F
Brake Fluid Range
Applicable Brake Fluid TypesDOT3, DOT4, DOT4+, DOT4ESP, DOT5, DOT5.1, DOT5.1ESP, ENV4, ENV6
Wet Boiling Point Range140-205°C / 284-401°F ±5%
Dry Boiling Point Range160-320°C / 320-608°F
Temperature Measurement Range0-320°C / 0-608°F
Power And Operation
Working Voltage12V, minimum 10V
Working Temperature Range0-50°C
DisplayOLED display
ControlsTAB key and START / S key
ProtectionBattery polarity reverse protection
Size And Package
Main Unit DimensionsØ88 × 146mm / Ø3.46 × 5.75in
Package Weight0.6kg
Warranty3 years for eligible non-human damage cases; lifetime maintenance support
Reference Values

Reference Values

Brake Fluid Boiling Point Reference Values

  • DOT3: dry 205°C / 401°F; wet 140°C / 284°F.
  • DOT4: dry 230°C / 446°F; wet 155°C / 311°F.
  • DOT4+: dry 230°C / 446°F; wet 155°C / 311°F.
  • DOT5: dry 260°C / 500°F; wet 180°C / 356°F.
  • DOT5.1: dry 270°C / 518°F; wet 190°C / 374°F.
AUTOOL AS506 brake fluid dry and wet boiling point reference values Click to enlarge
Maintenance And Care

Maintenance And Care

Brake fluid is corrosive. Clean the test stick after testing and use the water boiling point check for a quick initial diagnosis if the tester has not been used for a long time.

Clean After Testing

After the brake fluid test, empty the brake fluid and fill about 50ml of water to test and clean residual brake fluid from the test stick.

Long-Term Storage

If the tester is not used for a long time, detect with water so residual corrosive brake fluid can be removed from the test stick, then let the heating stick dry at room temperature.

Quick Calibration Check

Fill the beaker with water and check whether the boiling point reads around 100°C / 212°F ±3%. For stricter calibration, return the unit to the factory for retesting and calibration.

AUTOOL AS506 brake fluid tester packing list and package contents Click to enlarge
What Is In The Box

What Is In The Box

The packing list image shows the AS506 main tester, carrying case, beakers, injection sampler, hose, user manual, and retail box. Use the final package image as the accessory reference before ordering.

Main UnitAUTOOL AS506 brake fluid boiling point tester with power clamps
Storage CaseProtective carrying case shown in the package image
BeakersBrake fluid sample beakers with 50ml scale reference
Sampling ToolsInjection sampler and hose shown in the package image
DocumentationAUTOOL AS506 user manual
Retail BoxAUTOOL AS506 product box and accessories shown in the package image
Product Comparison

Product Comparison

Compare the AS series before choosing. AS506 is different from water-content brake fluid testers and transmittance-based oil testers because it focuses on brake fluid boiling point detection.

AS501 / AS502Brake fluid testers focused on brake fluid water content detection.
AS503Engine oil quality tester using optical probe technology for engine oil transmittance.
AS505Transmission fluid tester using optical probe technology for transmission fluid transmittance.
AS506Brake fluid boiling point tester using flash point heating technology, 12V power, Normal / Brand Mode, 16-second response, and 9 supported brake fluid types.
AS507Power steering fluid tester using optical probe technology for steering fluid transmittance.
Decision CheckChoose by the fluid being tested, detection technology, power supply, test duration, mode selection, cable length, and whether boiling point reference values are required.
AUTOOL automotive oil and fluid analyzer comparison chart including AS501 AS502 AS503 AS505 AS506 and AS507 Click to enlarge
Related Products

Related Products

Compare related AUTOOL fluid analyzers before choosing a brake fluid tester, engine oil tester, transmission fluid tester, brake fluid boiling point tester, or power steering fluid tester.

Manual And Downloads

Manual And Downloads

Download the AS506 user manual for brake fluid testing, 12V power connection, sampling, detection operation, safety warnings, maintenance, calibration, warranty, and return guidance.

AUTOOL AS506 brake fluid boiling point tester user manual preview Click to enlarge

AUTOOL AS506 User Manual

Open the PDF manual for operation guidance, safety precautions, brake fluid reference values, brand mode information, maintenance, and calibration instructions.

Download Manual

Need Setup Confirmation?

Contact AUTOOL Store before ordering if you need to confirm brake fluid compatibility, sample volume, 12V battery power, package contents, calibration, warranty, or AS series model selection.

Emailsupport@autoolstore.com WhatsApp+86 189 2647 7404

Questions And Answers

These answers cover boiling point testing, supported brake fluid types, Normal Mode, Brand Mode, sample volume, 12V power, safety, maintenance, calibration, AS series model differences, and warranty support.

Warranty And Contact

Warranty And Contact

For AS506 brake fluid compatibility, 12V power setup, sample volume, test result interpretation, package contents, maintenance, calibration, AS series model comparison, warranty, or troubleshooting, contact AUTOOL Store directly.

Pre-Sales And Product Support

Use support if you need help confirming whether AS506 is the right brake fluid tester for your workshop, how to test a specific brake fluid type, how to use Normal Mode or Brand Mode, or how AS506 compares with AS501, AS502, AS503, AS505, and AS507.

  • 3-year warranty support for eligible non-human damage cases
  • Lifetime maintenance guidance
  • Brake fluid type and brand reference confirmation
  • 12V battery connection and operation support
  • Packing List and accessory confirmation
  • Maintenance, water check, calibration, and troubleshooting guidance
  • AS501 / AS502 / AS503 / AS505 / AS506 / AS507 model selection support
  • Customer support response as soon as possible, usually within 24 hours
Email Supportsupport@autoolstore.com WhatsApp Support+86 189 2647 7404

Customer Reviews

  1. 4.96
    (27 customer reviews)
    100% of customers recommend this product.
    5 Stars96%4 Stars4%3 Stars0%2 Stars0%1 Star0%

  2. Raegan Gerlach –

    Shipping fast.

    0 of 0 found this review helpful

  3. Marico –

    Great service

    0 of 0 found this review helpful

  4. Erick Braun –

    Good!

    0 of 0 found this review helpful

  5. Terrance Gutmann –

    Very good product

    0 of 0 found this review helpful

  6. Justice Gutmann –

    I am very satisfied

    0 of 0 found this review helpful

  7. Aubree Fadel –

    Perfect

    0 of 0 found this review helpful

  8. Aubree Fadel –

    Thank you

    0 of 0 found this review helpful

  9. Terrance Gutmann –

    working good

    0 of 0 found this review helpful

  10. Justice Gutmann –

    Good packing

    0 of 0 found this review helpful

  11. Alexei Pirlog –

    Works norms

    0 of 0 found this review helpful

  12. Archibald Wilderman –

    work good

    0 of 0 found this review helpful

  13. Daisha O’Keefe –

    Great device.

    0 of 0 found this review helpful

  14. Damon Pfannerstill –

    Fast delivery.

    0 of 0 found this review helpful

  15. Will Runte –

    Received very quickly

    0 of 0 found this review helpful

  16. Joanie Armstrong –

    Works very well, very satisfied

    0 of 0 found this review helpful

  17. Jolie Braun –

    like it very much

    0 of 0 found this review helpful

  18. Coty Gaylord –

    Super

    0 of 0 found this review helpful

  19. Kaley Terry –

    Great device

    0 of 0 found this review helpful

  20. Skyla Littel –

    Fast shipping and good service

    0 of 0 found this review helpful

  21. Adelbert Rodriguez –

    looks good

    0 of 0 found this review helpful

  22. Erick Braun –

    it works

    0 of 0 found this review helpful

  23. frank –

    I’ve bought a lot of products from AUTOOL and every single one of them hasn’t disappointed me!

    0 of 0 found this review helpful

  24. Hofmann –

    The logistics were fast! Automotive repair tools no choice of AUTOOL products

    0 of 0 found this review helpful

  25. Angel Urzua / CARTEK / Rique (verified owner) –

    ** Fast delivery, Great attention, Good price **

    0 of 0 found this review helpful

  26. Rupert Carl –

    Testing the engine coolant boiling point is essential and this brake fluid tester is easy to use, easy to read and very useful!

    0 of 0 found this review helpful

  27. sadwa –

    Very good product, very accurate in detecting boiling point
    Greatly improved my work efficiency

    0 of 0 found this review helpful

  28. Schneider Heinz (verified owner) –

    Top!

    0 of 0 found this review helpful
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AUTOOL AS506 Automobile Brake Fluid Tester
AUTOOL AS506 Automobile Brake Fluid Tester

US$71.90

Add to cart This product has multiple variants. The options may be chosen on the product page