AUTOOL AS509 · Coolant Boiling-Point Tester
Check Coolant Boiling Point Against the Right Reference
Measure the boiling point of a prepared coolant sample and compare it with the applicable service reference. AS509 supports ethylene glycol, propylene glycol, and water coolants, with a general mode or built-in references for 23 listed brands. The OLED shows the result in approximately 20–40 seconds.
- Prepared-Sample Boiling Point
- Ethylene / Propylene Glycol / Water
- General / 23-Brand References
- About 20–40-Second Test
- External 12 V Power
Key Features
Coolant Boiling Point Tester with Normal and Brand Modes
High-Sensitivity Sensor
With temperature measurement accuracy of ±3%, AS509 tests coolant sample boiling point and tracks temperature changes during coolant condition checks.
Dual Mode Selection
Normal Mode supports daily general tests across vehicle models and coolant types. Brand Mode uses built-in brand data to perform reference-based testing for more accurate judgment.
Supports 23 Coolant Brands
Brand Mode covers ACDELCO, BASF, BOSCH, CASTROL, ENGINE_ICE, EVANS, FORD, HONDA, JOHN_DEERE, KUNLUN, MOBIL, MOPAR, NISSAN, OMTECH, PEAK, PRESTONE, RECOCHEM, SHELL, SKI-DOO, ZEREX, STAR_BRITE, TOTAL, and TOYOTA.
Built-In Reference Values
Compare the measured boiling point with the selected built-in reference after confirming the coolant identity.
1.6-Inch HD OLED Display
The self-illuminating OLED screen makes test results clear and intuitive, helping users read the result in bright light, dim workshops, or night-time conditions.
Dual Safety Protection
Built-in reverse polarity protection and overheat protection help reduce operational errors, connection mistakes, and overheating risks during testing.
Coolant Type Coverage
AS509 tests ethylene glycol, propylene glycol and water coolant types using an external 12V battery supply.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Safe Use
Control Coolant Type, Heat and Sample Handling
Use the Boiling-Point Result
Use the listed coolant type, sample method and temperature conditions. The open-sample boiling result is not the protection temperature of a pressurized cooling system and does not report freeze point, pH or inhibitor reserve.
Specifications
AS509 Coolant Boiling Point Tester Specifications
| Test Method & Application | |
|---|---|
| Detection Technology | Sample Heating Technology |
| Operating Principle | Coolant |
| Test Mode Selection | Normal Mode/Brand Mode |
| Boiling Point Reference Value | Yes |
| Normal Mode | 23 Coolant BrandsFor ACDELCO、BASF、BOSCH、CASTROL、ENGINE_ICE、EVANS、FORD、HONDA、JOHN_DEERE、KUNLUN、MOBIL、MOPAR、NISSAN、OMTECH、PEAK、PRESTONE、RECOCHEM、SHELL、SKI-DOO、ZEREX、STAR_BRITE、TOTAL、TOYOTA |
| Measurement & Response | |
| Temperature Unit Switching | ℃/℉ |
| Temperature Measurement Range | Diluted Coolant Boiling Point Range：100°C~120°C(212°F~248°F)Original Manufacturer Coolant Boiling Point Reference Range106°C~191°C(221°F~376°F) |
| Test Duration | 20~40s Response |
| Display, Probe & Power | |
| Backlit Display Screen | 1.6-inch |
| Test Cable Length | 130cm |
| Power Supply Voltage | 10-14V |
Manual & Support
Find the Manual and Fluid-Test Guidance
AUTOOL AS509 User Manual
Open the PDF manual for AUTOOL AS509 coolant type selection, sensor testing, built-in reference values, result interpretation, dual safety protection and troubleshooting support.
Package Contents
See What Comes in the Box
- Main UnitAUTOOL AS509 Coolant Boiling Point Tester
- Carrying CaseProtective storage case
- Sampling ToolsBeaker, syringe, and tube
- ItemPower 12V battery clamps and power cable
- DocumentationUser manual
- PackageRetail box
Buyer Questions
Fluid Fit, Method and Result Questions
What Coolant Types Can AS509 Test?
AS509 is compatible with Ethylene Glycol, Propylene Glycol, and Water coolant types. It is designed to measure coolant boiling point and provide one input for the applicable coolant and vehicle service decision.
What Is The Difference Between Normal Mode And Brand Mode?
Normal Mode is for daily general testing and can directly measure the actual boiling point of coolant across vehicle models and coolant types. Brand Mode uses built-in data for 23 popular coolant brands and compares results with brand reference values for more accurate judgment.
How Much Coolant Sample Is Needed?
Use a sampler to draw 50ml of coolant from the vehicle reservoir, then inject it into the beaker for testing.
Does AS509 Need A 12V Battery?
Yes. AS509 uses 12V external battery power through power clamps. Its operating voltage range is 10-14V.
What Brands Are Supported In Brand Mode?
Brand Mode supports ACDELCO, BASF, BOSCH, CASTROL, ENGINE_ICE, EVANS, FORD, HONDA, JOHN_DEERE, KUNLUN, MOBIL, MOPAR, NISSAN, OMTECH, PEAK, PRESTONE, RECOCHEM, SHELL, SKI-DOO, ZEREX, STAR_BRITE, TOTAL, and TOYOTA.
What Does The Boiling Point Reference Value Mean?
After confirming coolant identity, compare the measured boiling point with the built-in reference and the vehicle service criteria to plan the next step.
How Long Does One Test Take?
The AS509 testing time is approximately 20-40 seconds, depending on the test condition and coolant sample.
What Safety Protection Does AS509 Include?
AS509 includes reverse polarity protection and overheat protection to reduce operational error and overheating risks during coolant boiling point testing.
