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From “Top-Up” to “Full Exchange” – AUTOOL Redefines Coolant Maintenance
February 28, 2026
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Service Upgrade
From Replenishment to Replacement: Professional Maintenance Upgraded
The earlier SC301 focused on testing and filling. The new service direction represented by SC501 and SC611 focuses on full coolant exchange, circulation flushing, and more visible maintenance results. This change turns coolant service from a simple top-up into a professional cooling system maintenance process.
Old Service Logic
Traditional coolant maintenance often solves only the question of how to add coolant. It may not fully remove old fluid, scale, rust, or impurities from the cooling system.
New Service Logic
A coolant exchange machine uses equal volume exchange and circulation cleaning to replace old fluid more thoroughly, improve service quality, and provide customers with a visible difference between new and old coolant.
Why It Matters
Why Is a Coolant Replacement Machine Necessary?
Many mechanics still use traditional methods to change coolant: disconnecting hoses, connecting a bucket, and manually adding fluid. This method is inefficient, and the replacement rate is usually only 50%-70%. Old fluid residue, air locks, and incomplete removal of impurities are common problems.
- Equal Volume ExchangeNew coolant is added while old coolant is recovered, helping maintain balance during service.
- Circulation CleaningThe system flushes scale, rust, and other impurities from the cooling circuit.
- Higher Replacement RateCompared with manual draining and adding, a coolant replacement machine can achieve more thorough coolant replacement.
- Reduced Air Lock RiskProper exchange and filling reduce the chance of air pockets that affect cooling performance.
New Product Launch
AUTOOL Coolant Exchange Machines
AUTOOL SC501 Smart Cooling System Flush & Exchange Machine
- Circulation Flush FunctionEffectively removes scale, rust, and other impurities to improve heat dissipation efficiency and extend cooling system life.
- Equal Exchange TechnologySimultaneously fills new fluid while recovering old fluid, achieving an exchange rate of nearly 100%.
- Mechanical Knob ControlSimple and intuitive operation with no special training required.
- Pressure Overload ProtectionPrevents excessive pressure from damaging the vehicle’s cooling system.
- New/Old Fluid Comparison WindowTransparent hoses with sight glass allow visual confirmation of exchange quality.
- 25L Large-Capacity TanksMeets the demands of continuous workshop use.
- Quiet Operation DesignMinimal noise during operation supports a better working environment.
AUTOOL SC611 Smart Fully Automatic Cooling System Flush & Exchange Machine
- One-Button Fully Automatic ExchangeAutomatically completes the coolant exchange process without repeated manual intervention.
- Vacuum Hold Pressure ModeCreates a vacuum and performs a pressure-holding test to check for leaks in the cooling system.
- Vacuum Fill ModeVacuum-assisted filling helps prevent air pockets, especially on high-end and new energy vehicles with complex cooling layouts.
- Precise Flow ControlControls flow rate and pressure during exchange to prevent cooling system damage.
- Circulation Flush and ProtectionRemoves scale, rust, and impurities while keeping pressure overload protection active.
- Real-Time Fluid Level Display25L tanks and clear level display show new and old fluid levels.
Market Comparison
Comparison with Existing Tools on the Market
VS Traditional Vacuum Filling Tools
Traditional vacuum tools can only assist with filling. They cannot extract old coolant or flush the system. In essence, they solve the problem of how to add coolant, not how to change it thoroughly.
AUTOOL SC501/SC611 deliver professional-grade maintenance through active old coolant extraction, equal exchange technology, nearly 100% exchange rate, circulation flush, and electric pump design that requires no external air compressor.
VS Other Brand Exchange Machines
- Large Capacity + Low Power Consumption25L tanks compared with common 20L competitor tanks, with 15W power consumption compared with many 60W+ designs.
- More Practical Power SupplyAC independent power avoids relying on vehicle batteries and supports fixed workstation use.
- Leading Vacuum TechnologySC611 integrates vacuum hold pressure testing and vacuum filling for high-end and new energy vehicles.
- Outstanding Cost PerformanceSC501 uses mechanical knob control and affordable positioning to cover mainstream fuel vehicles.
Decision Table
Detailed Comparison of SC301, SC501, and SC611
| Comparison Item | SC301 Coolant Filler | SC501 Coolant Exchange Machine | SC611 Coolant Exchange Machine |
|---|---|---|---|
| Product Positioning | Testing + Filling | Mechanical Flush & Exchange | Fully Automatic Flush & Exchange |
| Core Functions | Vacuum test, pressure leak test, coolant filling | Circulation flush, equal exchange | Circulation flush, equal exchange, vacuum test, vacuum filling |
| System Flushing Capability | No | Yes | Yes |
| Exchange Rate | 90%+ | Nearly 100% | Nearly 100% |
| Operation Method | Push-button | Mechanical knob | One-button fully automatic |
| Vacuum Test Function | Yes | No | Yes |
| Vacuum Filling Function | Yes | No | Yes |
| Pressure Hold Test Function | Yes | No | Yes |
| Pressure Overload Protection | Yes | Yes | Yes |
| Real-Time Fluid Level Display | Digital display | Window display | Window display |
| New/Old Fluid Comparison Window | No | Yes | Yes |
| Power Supply | DC 12V | AC 100-240V | AC 100-240V |
| Power Rating | – | 15W | 15W |
| Tank Capacity | – | 25L | 25L |
| Pressure Range | -1~2bar | 0-3.5kg/cm2 | 0-3.5kg/cm2 |
| Vacuum Adjustment Range | – | – | -35~80kPa |
| Applicable Vehicles | Mainstream fuel vehicles | Mainstream fuel vehicles | Fuel vehicles + new energy vehicles + high-end vehicles |
Existing AUTOOL Coolant Service Tools
The current product catalog includes SC301-related coolant test and filler tools, coolant boiling point testing, and SC301 accessory options. SC501/SC611 are discussed in this article as the full-exchange upgrade direction.
- Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL SC301 Automotive Coolant Leak Detector and Filler
From US$350.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL AS509 Coolant Boiling Point Tester
From US$79.00 - Select options This product has multiple variants. The options may be chosen on the product page
AUTOOL Conical Adapter Fittings Use for SC301 Cooling System Tester Accessory
US$26.00
Purchase Recommendations
Which One Is Right for You?
Choose SC301 When
Your main need is coolant filling, vacuum testing, and pressure leak testing for mainstream fuel vehicles, and full circulation flushing is not the primary service item.
Choose SC501 When
You want to move from simple drain + refill service to deep cleaning and equal volume replacement for mainstream fuel vehicles, while keeping operation simple through mechanical knob control.
Choose SC611 When
You service high-end vehicles, new energy vehicles, or complex cooling system layouts that benefit from one-button full automatic exchange, vacuum hold pressure testing, vacuum filling, and precise flow control.
Business value: The value of SC501 and SC611 is not only the equipment itself. They help transform a low-value fluid drain + refill job that may be priced around 50 RMB into a professional deep cleaning and equal volume replacement service that customers can see, understand, and may accept at a higher service value such as 200 RMB when the workshop can clearly explain the difference.
Conclusion
Conclusion
From SC301 to SC501 and SC611, AUTOOL continues to provide the automotive repair industry with more professional and efficient maintenance equipment. The launch of the coolant changer marks a more complete layout in cooling system maintenance, moving from replenishment to replacement.
Thorough cleaning and equal volume replacement help every vehicle begin its next journey with a healthier cooling system. Contact the AUTOOL team for new product discounts, product details, and cooperation policies.
Need Coolant Exchange Machine Details?
Ask AUTOOL about SC301, SC501, SC611, coolant testing tools, accessories, new product discounts, and cooperation policies.
- WhatsApp: +86 189 2647 7404
- Email: [email protected]
