AUTOOL AST618 · Four-Wheel Pulsating Brake Fluid Exchanger
Connect Four Calipers for One Controlled Service
AUTOOL AST618 connects all four brake calipers for controlled, one-person fluid replacement. AST618 lets the operator set pressure, pulse, and working time from the digital panel, supplies fresh fluid from a stainless-steel pot, and collects used fluid in four bottles. A 17-piece adapter set and mobile 12 V trolley support varied workshop vehicles.
- Four-Wheel Simultaneous Service
- 0.6–3.0 bar Adjustment
- 3 L Stainless Fresh-Fluid Tank
- Four 1.5 L Recovery Bottles
- 17 Reservoir Adapters

Key Features
Digital Pressure, Pulse and Time Control
Four-Wheel One-Person Exchange
Connect all four brake calipers for simultaneous fluid exchange. After preparing the fluid, matched reservoir adapter, sealed connections, and four recovery bottles, one technician can start the service.
Pulse One-Button Replacement
After setting pressure, pulse, and working time on the digital panel, one technician can start the automatic brake-fluid replacement process.
Adjustable Digital Controls + Protection
Set pressure, pulse, and working time; use pause/start and relief-pressure/stop controls while viewing the working parameters. The machine can stop if the new-fluid supply is abnormal, pressure cannot build, or the pump draws in air, helping reduce the risk of air entering the brake line.
3L Stainless-Steel Brake Fluid Tank
The 3L stainless-steel brake fluid tank is corrosion-resistant, collision-resistant, and durable for workshop use.
17-Piece Reservoir Adapter Set
Match the supplied 17-piece adapter set to varied reservoir designs across many European, American, and Asian vehicle models.
Equipment-Side Priming
Prime the machine fluid path before first use and whenever the path is opened or the brake-fluid type changes, then keep the reservoir connection sealed during service.
Mobile Trolley Structure
Move the AST618 on four rollers with its three-section telescoping handle; hanging hooks and hose-storage details organize it around the workshop.
Pulse Pressure Exchange
Pulse pressure delivers fresh fluid to the reservoir at the selected working pressure while used fluid is drained from each caliper in the prescribed sequence until new clean fluid flows out, helping reduce the chance of air bubbles compared with basic pressurized filling.
3.5 m Tubing
The listed 3.5 m tubing supports routing service connections around the vehicle.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Safe Use
Control 12V Power, Pressure and Reservoir Level
Factory Pressure Setting
The pressure regulator is set around 1-1.5bar before delivery to help protect the brake fluid reservoir and secondary sealing ring during fluid exchange.
Avoid Excessive Pressure
Lower-pressure bleeding or fluid exchange is possible. Higher working pressure should only be used when appropriate; excessive pressure may damage the brake master cylinder or related brake components.
Check Every Connection
Before changing oil, check each connection for leaks and inspect the connecting hoses for damage.
No Engine Start Needed
The vehicle does not need to be started during the brake fluid exchange operation.
Prime the Fluid Line
Fill the delivery line with the specified brake fluid and remove air before connecting it to the vehicle.
Specifications
AST618 Specifications
| Service Method & Capacity | |
|---|---|
| Oil Bottles | 1.5L · 4 Old Oil Bottles3L · 1 Integrated Stainless Steel Oil Bottle |
| Number of Brake Calipers | 4pcs |
| Shutdown Pressure Relief Function | 10 Seconds Pressure Relief Time |
| Number of Brake Caliper Changed Simultaneously | Simultaneous Oil Change for Four Wheels |
| Maximum Output Flow Rate | 1.6L/min |
| Pulse Settings | Yes |
| Working Pressure Adjustment | Yes |
| Working Time Settings | Yes |
| Power, Pressure & Connections | |
| Input Voltage | DC12V |
| Working Pressure | 0.6-3.0bar |
| Compatible Connectors | 17 Types |
| Pressure Gauge | Yes |
| Mobility & Physical Setup | |
| Product Weight | 23.5kg |
| 360° Casters | Yes |
| Three-Section Telescoping Handle Design | Yes |
Manual & Support
Find the Manual and Bleeding Guidance

AUTOOL AST618 User Manual
Open the PDF manual for AUTOOL AST618 four-wheel brake-fluid exchange, pressure, pulse and time settings, adapter setup, priming, fluid monitoring, safety and troubleshooting support.

Package Contents
See What Comes in the Box
- Main UnitAUTOOL AST618 pulsating brake fluid exchanger
- Adapter Kit17-piece adapter set
- Used Brake Fluid BottlesFour used brake fluid bottles
- Power CableDC 12V battery clamp power cable
- ManualAUTOOL AST618 user manual
- PackageAST618 retail box
Buyer Questions
Bleeder Setup, Adapter and Fluid Questions
What Is The AUTOOL AST618 Used For?
AUTOOL AST618 is used for brake and clutch fluid exchange on 12V vehicles. It is designed for workshop brake fluid service, supports pulse pressure exchange, and can connect to four brake calipers for simultaneous brake oil exchange.
What Brake Fluid Types Does AST618 Support?
AST618 supports DOT3, DOT4, and DOT5.1 brake fluid types. Always choose the brake fluid specified by the vehicle manufacturer and avoid contamination from air, water, or debris during service.
Can AST618 Exchange Brake Fluid For Four Wheels At The Same Time?
Yes. AST618 is designed for four-wheel simultaneous brake oil exchange. It includes four used-oil bottles and can connect to four brake calipers, helping improve efficiency for large workshops.
What Working Pressure Should I Use?
Factory-set pressure: 1–1.5 bar. Adjustable range: 0.6–3.0 bar. Start at the lowest suitable pressure and follow the vehicle manufacturer’s procedure.
Does The Vehicle Need To Be Started During Operation?
No. The vehicle does not need to be started during the AST618 brake fluid exchange operation.
What Should I Check Before Changing Brake Fluid?
Check every connection for leaks, inspect the connecting hoses for damage, select the correct adapter, keep the new oil filler port clean, and confirm the brake fluid type required by the vehicle.
How Do I Use The AST618 Controls During Exchange?
After connecting the machine and adding fresh brake fluid, connect the DC 12V power, turn on the power switch, press the Vacuum Switch, then press the Fuel Switch. During the process, watch the brake oil tank mouth. If refilling is too slow, press the acceleration switch. If it is too fast, press the deceleration switch.
What Should I Do After Finishing The Oil Exchange?
Drain the used oil from the equipment tank completely after the oil change. If used oil remains in the tank, it may damage the vacuum pump and prevent future oil exchange operations.
AUTOOL AST603 vs AST605 vs AST609: What Is The Difference?
AST605 includes more compatible connectors than AST603 while the main parameters are similar. AST609 includes seven compatible connectors, one 1.5L used-oil bottle, one 1L new-oil bottle, and supports two-wheel simultaneous oil exchange. AST603 and AST605 are single-wheel oil change models with a maximum output flow of 1.6L/min, while AST609 also lists 1.6L/min in the current comparison chart and is designed for faster two-wheel workflow.
AUTOOL AST612 vs AST618: Which One Should I Choose?
Choose AST612 if you need a DC12V two-wheel brake fluid exchanger with nine adapter types. Choose AST618 if you need higher workshop efficiency with four-wheel simultaneous oil exchange, four 1.5L used-oil bottles, a 3L stainless-steel oil pot, 17 adapter types, pulse settings, working time settings, 360° casters, and a three-section telescoping handle.
What Accessories Are Included With AST618?
Package contents: AST618 main unit, retail box, 17-piece adapter case, DC 12 V power cable, user manual, and four used-oil bottles.
How Long Is The Warranty?
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.





