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AUTOOL SC301 Automotive Coolant Leak Detector and Filler
US$350.00
Key Features
- Dual Modes
- Three Pressures
- Leak Indicators
- Dual Modes: Filler mode and leak detection mode let buyers handle coolant filling and leak checks with one machine.
- Three Pressures: Selectable -35kPa, -40kPa, and -45kPa settings help match vacuum level to different vehicle conditions.
- Leak Indicators: Red and green LED indicators make leak status easier to confirm without interpreting complex data.
- 3-Year Warranty Main unit 3 years · Accessories 1 year
- 90-Day Returns Eligible returns within 90 days
- Official Store Genuine products · Direct support
AUTOOL SC301
Product Overview
The AUTOOL SC301 is a 2-in-1 automotive cooling system tester and coolant vacuum filler for cooling system vacuuming, coolant filling, and pressure leak detection. It uses vacuum extraction and pressure-holding detection to help users check cooling system sealing, remove air pockets, and refill coolant more efficiently with one-person operation.
Cooling System Vacuuming Coolant Filling Pressure Leak Detection Smart Control Panel
DC 12VPower Supply
-35 / -40 / -45KPaPressure Levels
-1~2barPressure Range
3 YearsMain Unit Warranty
Click to enlargeBefore You Order And Use
Before You Order And Use
Confirm the power supply, air compressor, coolant type, radiator temperature, and drain-valve position before testing or filling a cooling system.
DC 12V Only
Use a car battery or DC 12V power supply. Do not connect the SC301 to 24V, 110V, 220V, or 380V power.
Air Compressor Required
Connect the air inlet hose to an external air compressor. A compressor rated around 0.7MPa or higher is recommended before operation.
Vehicle Ignition Not Required
The cooling system test and coolant filling process does not require starting the vehicle.
Cool Before Opening
Before opening the radiator cap or coolant reservoir, make sure the radiator and cooling system have cooled down.
Use Suitable Coolant
Avoid low-quality coolant. Do not mix coolants with different performance specifications, and do not add undiluted coolant directly in low-temperature conditions.
Use Lower Pressure For Older Vehicles
For older vehicles or aging cooling system parts, choose a lower pressure level instead of higher settings.
Safety And Setup Notes
- Use the SC301 only for automotive cooling system testing and coolant filling.
- Open the drain valve before starting Testing Mode or Filling Mode. The valve is open when it aligns parallel to the air hose.
- Operate in a well-ventilated area and avoid inhaling gas during leak detection.
- Inspect the equipment before use. If damage is found, stop using the machine and arrange qualified repair.
- When draining residual coolant, work in an open area or use a container to collect the liquid.
Key Features
Key Features
SC301 combines leak detection, coolant vacuuming, automatic filling, adjustable pressure levels, clear leak indicators, and adapter-based vehicle compatibility in one automated cooling system service tool.
Two Operation Modes
Filler Mode removes residual air and refills coolant. Tester Mode checks cooling system sealing through vacuuming and pressure holding.
Automatic Coolant Filling
After vacuuming is complete in Filling Mode, the machine automatically starts adding coolant to the cooling system.
Pressure Leak Detection
In Testing Mode, the machine enters pressure-holding detection and provides an automatic leak indication after the hold period.
Three Pressure Settings
Choose -35KPa, -40KPa, or -45KPa based on the working condition and vehicle configuration.
Digital Control Panel
The panel separates Filling Mode and Leak Detection Mode, with digital display, pressure knob, working indicator, and start/stop buttons.
Red And Green Indicators
A green light indicates no leakage. A red light indicates leakage, helping users judge cooling system status more quickly.
One-Person Operation
The high-automation workflow helps reduce manual effort and supports faster coolant replacement and cooling system inspection.
Wide Adapter Support
Three adapter fittings help connect the tool to many common coolant reservoir openings for filling and leak detection.
Warranty And Maintenance
The main unit is covered by a 3-year warranty, and included accessories are covered by a 1-year warranty under eligible conditions.
Click to enlarge
Click to enlarge
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Click to enlargeApplications
Applications
SC301 is designed for automotive cooling system leak detection and coolant filling. The included adapter fittings help fit many common coolant reservoir openings, but vehicle fitment should still be confirmed before use.
Cooling System Leak Check
Use Testing Mode to help check main cooling system pipelines, engine coolant hoses, heater cores, and related cooling system sections.
Coolant Replacement
Use Filling Mode to vacuum the system and add coolant, helping reduce air mixed into the cooling system during refilling.
Three Adapter Sizes
The package image and adapter image show three fittings marked around 33mm, 41mm, and 52mm for different reservoir openings.
Most Vehicle Cooling Reservoirs
The universal adapter design supports many vehicle models, but it should not be described as fitting every vehicle without checking the reservoir opening.
Click to enlargeHow To Use
How To Use
Follow the setup order, select Testing Mode or Filling Mode, use the correct pressure level, and drain residual coolant safely after service.
Basic Setup
Connect the air compressor hose to the air source input. Open the drain valve, place the air source output hose into a used coolant recovery container, place the liquid input hose into the new coolant container, connect the filling hose to the vehicle coolant reservoir with the proper adapter, connect to a 12V battery, then select the mode and start.
Mode Display Logic
On startup, Testing Mode and Filling Mode show their gear selections. When one mode is selected, the gear display for the other mode disappears so the user can confirm the active mode more easily.
Click to enlargeTesting Mode
- Vehicle ignition is not required.
- Open the drain valve before operation.
- Connect to a car battery or DC 12V power supply.
- Connect the air inlet hose to the air compressor.
- Select -35KPa, -40KPa, or -45KPa.
- Press Start/Stop to begin vacuuming.
- The machine enters 60-second pressure holding after vacuuming.
- Green light means no leakage; red light means leakage.
Filling Mode
- After Testing Mode, select Filling Mode to add coolant.
- Connect the filling hose to the vehicle.
- Place the coolant inlet hose into the coolant container.
- Choose a suitable pressure gear.
- Use lower pressure for older vehicles.
- Press Start/Pause to start vacuuming.
- After vacuuming, the machine automatically fills coolant.
- Press Stop after filling is complete, then disconnect the connector.
Drain Operation
- Drain residual coolant in an open area or collect it with a container.
- After disconnecting from the vehicle, close the drain valve by turning it downward.
- Press and hold the Tester Mode Start button until the buzzer sounds, then release.
- Press Tester Mode Start to clean internal pipes.
- Liquid will discharge from the filling port.
- When no liquid comes out, press Tester Mode Stop, power off, and remove the compressed air hose.
Operation Reminders
- In Filling Mode, if filling is not complete after one cycle, multiple filling cycles can be performed.
- If no coolant enters within two minutes during Filling Mode, the machine displays a fault reminder.
- In Testing Mode, if the selected vacuum level cannot be achieved and maintained, the machine switches to pressure-holding mode within two minutes and displays a fault reminder.
- After use, clean residual coolant from internal pipes according to the drain operation steps.
Specifications
AUTOOL SC301 Specifications
Review the SC301 power, pressure, hose length, dimensions, adapter, and interface information before operation.
| Core Specifications | |
| Product | AUTOOL SC301 Cooling System Tester & Filler |
| Main Functions | Cooling system vacuuming, coolant filling, and pressure leak detection |
| Power Supply | DC 12V |
| Manual Power Rating | DC 12V / 5A |
| External Air Source | External air compressor required; around 0.7MPa or higher recommended |
| Pressure Range | -1~2bar |
| Selectable Vacuum Pressure | -35KPa / -40KPa / -45KPa |
| Operating Temperature | -10°C~60°C shown on the specification image; confirm with the latest manual if operating outside this range |
| Hose Length And Size | |
| Liquid Input Hose Length | 0.5m |
| Filling Hose Length | 2m |
| Air Outlet Hose Length | 1m |
| Product Dimensions | Front view: 302 × 260 × 355mm; side view: 217 × 167 × 355mm |
| Packaging Dimensions | 370 × 310 × 416mm |
| Packaging Weight | 7.2kg |
| Main Interface And Indicators | |
| Panel Controls | Pressure level display, working indicator, adjustment knob, Start/Pause button, Stop button, Start/Stop button |
| Indicators | Green No Leakage indicator and red Leakage indicator |
| Ports And Valves | Air source input port, drain valve, air source output port, liquid input port, DC12V power port, and filling port |
| Adapter Fittings | Three adapters shown around 33mm, 41mm, and 52mm for many common coolant reservoir openings |
Click to enlarge
Click to enlargeCore Specifications
ProductAUTOOL SC301 Cooling System Tester & Filler
Main FunctionsCooling system vacuuming, coolant filling, and pressure leak detection
Power SupplyDC 12V
Manual Power RatingDC 12V / 5A
External Air SourceExternal air compressor required; around 0.7MPa or higher recommended
Pressure Range-1~2bar
Selectable Vacuum Pressure-35KPa / -40KPa / -45KPa
Operating Temperature-10°C~60°C shown on the specification image; confirm with the latest manual if operating outside this range
Hose Length And Size
Liquid Input Hose Length0.5m
Filling Hose Length2m
Air Outlet Hose Length1m
Product DimensionsFront view: 302 × 260 × 355mm; side view: 217 × 167 × 355mm
Packaging Dimensions370 × 310 × 416mm
Packaging Weight7.2kg
Main Interface And Indicators
Panel ControlsPressure level display, working indicator, adjustment knob, Start/Pause button, Stop button, Start/Stop button
IndicatorsGreen No Leakage indicator and red Leakage indicator
Ports And ValvesAir source input port, drain valve, air source output port, liquid input port, DC12V power port, and filling port
Adapter FittingsThree adapters shown around 33mm, 41mm, and 52mm for many common coolant reservoir openings
Click to enlargeWhat Is In The Box
What Is In The Box
The package image shows the SC301 main unit and included accessories. Coolant and the external air compressor are not included.
Main UnitAUTOOL SC301 cooling system tester and filler
Retail BoxSC301 product packaging shown in the package image
Power CableDC 12V battery clamp power cable
AdaptersThree coolant reservoir adapter fittings shown in the package image
HosesHoses shown with the SC301 main unit for coolant filling and air connection
DocumentationUser manual
Manual And Downloads
Manual And Downloads
Download the SC301 manual for setup, power supply, air compressor connection, testing mode, filling mode, drain operation, maintenance, and warranty information.
Click to enlargeAUTOOL SC301 Cooling System Tester & Filler Manual
Open the PDF manual for operation instructions, product structure, technical parameters, maintenance, and warranty details.
Download ManualNeed Setup Confirmation?
Contact AUTOOL Store before ordering if you need to confirm air compressor requirements, adapter fitment, coolant filling process, pressure level selection, package contents, or troubleshooting.
Questions And Answers
These answers cover power supply, air compressor use, pressure level selection, Testing Mode, Filling Mode, adapters, coolant requirements, package contents, and warranty.
Yes. SC301 requires an external air compressor connected to the air source input. A compressor rated around 0.7MPa or higher is recommended for proper operation.
No. SC301 is designed for DC 12V power only. Using 24V, 110V, 220V, or 380V may damage the equipment.
No. Vehicle ignition is not required for SC301 cooling system testing or coolant filling.
SC301 provides three vacuum pressure levels: -35KPa, -40KPa, and -45KPa. Choose the level according to the vehicle condition and cooling system status. For older vehicles or aging components, use a lower pressure level.
In Testing Mode, the green light means no leakage is detected, while the red light means leakage is detected. The machine enters pressure-holding detection and then provides the indication automatically.
After the correct pressure level is selected and the Start/Stop button is pressed, the machine starts vacuuming. Once vacuuming is complete, it enters a 60-second pressure-holding mode and then gives an automatic leak detection result.
If the selected vacuum level cannot be achieved and maintained in Testing Mode, SC301 switches to pressure-holding mode within two minutes and displays a fault reminder. Check the cooling system connection, adapter sealing, hoses, and possible leak points before testing again.
In Filling Mode, choose the suitable gear, press Start/Pause, and the machine begins vacuuming the cooling system. After vacuuming is complete, coolant is automatically filled into the system. If filling is not complete, multiple filling cycles can be performed.
If no coolant enters the system within two minutes during Filling Mode, SC301 displays a fault reminder. Check whether the coolant inlet hose is placed correctly in the coolant container, whether the adapter is sealed, whether the drain valve is in the correct position, and whether the air compressor is connected properly.
The package image shows three adapter fittings. The adapter image marks them around 33mm, 41mm, and 52mm. These fittings are suitable for many common vehicle coolant reservoir openings, but fitment should be confirmed for special vehicles.
No. Coolant is not included. Use coolant that matches the vehicle and avoid mixing coolants with different performance specifications.
The package image shows the SC301 main unit, retail box, DC 12V battery clamp power cable, three adapter fittings, hoses shown with the unit, and user manual. Coolant and the external air compressor are not included.
Check tightened and connected parts regularly. Treat parts that contact chemical media with anti-corrosion care when needed. Do not overload the equipment, check aging wires in time, avoid contact with corrosive liquids, and store the product in a dry place when not in use.
From the date of receipt, AUTOOL provides a 3-year warranty for the main unit and a 1-year warranty for included accessories under eligible conditions. If support is needed, prepare pictures or videos to help confirm the issue.
Warranty And Contact
Warranty And Contact
For SC301 setup, air compressor requirements, adapter fitment, coolant filling issues, leak indicator questions, drain operation, package contents, maintenance, or warranty support, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help confirming whether SC301 is suitable for your vehicle cooling system, which pressure level to choose, how to connect the air compressor, how to drain residual coolant, or how to troubleshoot filling and pressure-holding reminders.
- 3-year warranty for the main unit under eligible conditions
- 1-year warranty for included accessories under eligible conditions
- DC 12V power and air compressor setup confirmation
- Adapter size and vehicle reservoir fitment confirmation
- Testing Mode, Filling Mode, and drain operation guidance
- Coolant filling fault reminder and leak indicator troubleshooting
- Packing List and accessory confirmation
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