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AUTOOL SDT208 Dual-Pressure Automotive Smoke Machine with 10/35 PSI Modes
US$429.00
Key Features
- Dual-Pressure 10 / 35 PSI Output
- Pressure & Flow Control
- Air Mode + Smoke Mode
- Self-Contained 12V / 24V Operation
- Dual-Pressure 10 / 35 PSI Output: Switch between two pressure ranges for different automotive leak-test procedures; use the range specified by the vehicle or component procedure.
- Pressure & Flow Control: Use the pressure gauge, flow meter, and airflow regulator together to monitor system behavior and tune the test.
- Air Mode + Smoke Mode: Check pressure and airflow first, then add smoke when you are ready to visually locate the leak.
- Self-Contained 12V / 24V Operation: A built-in air pump and dual-voltage power support a wider range of vehicle and workshop setups without an external compressor.
- 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 SDT208 · 10 / 35 psi Dual-Pressure Automotive Smoke Leak Detector
Switch Between Two Pressure Ranges for Different Test Procedures
The AUTOOL SDT208 is a dual-pressure automotive smoke leak detector with a built-in air pump. Choose 35 psi Standard Mode or 10 psi EVAP Mode, then use Air Mode for pressure and airflow monitoring or Smoke Mode for visual leak location. It supports automotive leak checks on EVAP, intake, exhaust, crankcase, fuel-tank, line-fitting, turbo-related, and other sealed systems.
- 35 psi Standard / 10 psi EVAP
- Pressure + Flow Monitoring
- Air / Smoke Dual Modes
- EVAP Leak Detection
12V / 24VVehicle Compatibility
5 SecondsSmoke Output
VisibleOil Level Gauge
3 YearsMain Unit Warranty
Core leak-detection capabilities
Key Features
SDT208 combines 35 psi Standard Mode and 10 psi EVAP Mode with pressure and airflow monitoring. Separate Air and Smoke modes support checks before visual leak location. The unit works with 12V and 24V vehicles, includes visible oil-level monitoring, and is backed by 3-year warranty support.
Standard and EVAP Pressure Modes
Standard Mode is rated at 35 psi, while EVAP Mode is rated at 10 psi to better protect EVAP lines during testing.
Tiny-Leak Checks
EVAP Mode supports common repair-shop EVAP checks, including tiny leaks down to about 0.5 mm, while pressure protection helps protect the system under test.
Airflow Meter
The airflow meter helps identify possible leaks by showing changes in airflow.
Flow Control Valve
The airflow control valve lets you adjust airflow into the test line.
Pressure Gauge
The pressure gauge helps identify a possible leak by showing pressure changes.
Air Mode and Smoke Mode
The smoke generator supports Air Mode for pressure monitoring and Smoke Mode for visual leak location.
Built-In Air Pump
No external air supply is required. The built-in pump simplifies setup for workshop and mobile repair use.
Smoke Starts in About 5 Seconds
The smoke generator produces smoke in about 5 seconds after the power, oil, and test-line setup is complete.
EVAP, Intake and Vacuum-Line Checks
Use EVAP Mode with EVAP tools that match the vehicle test port to check evaporative emission system leaks. It also helps locate leaks in intake lines, throttle-related lines, vacuum lines, and engine-sealing areas.
Exhaust, Crankcase, Fuel-Tank, Line and Turbo Checks
Supports visual leak checks on exhaust sections, crankcase systems, and line fittings. It can also assist with low-pressure checks around fuel-tank sealing areas and automotive line connections. Use it for selected low-pressure turbo, intercooler, and air-path leak checks within the stated pressure limits.
Visible Oil Level Gauge
The SDT208 interface includes an oil level gauge together with the airflow meter, pressure gauge, power indicator, and alarm indicator.
12V / 24V Vehicle Compatibility
Compatible with 12V and 24V vehicles, including cars, motorcycles, snowmobiles, ATVs, off-road vehicles, light trucks, and speedboats.
Overheat and Low-Temperature Protection
Automatic overheat protection shuts off power above 75°C, and the unit supports operation down to -20°C.
3-Year Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy
Step-by-step smoke leak testing
Step-by-Step Instructions
Use SDT208 with 10–15 mL liquid paraffin or baby oil and a 12V or 24V DC battery. Select an adapter that matches the test port and the correct pressure mode for the system under test.
Step 01
Add Testing Oil
Fill 10–15 mL baby oil or liquid paraffin into the detector before use. Do not overfill.
Step 02
Open the Airflow Regulator
Gently turn the knob to open the airflow regulator valve before starting the test.
Step 03
Connect the Test Line
Access the system to be tested and position the detector near the test area. Disconnect the line you want to test, then connect the hose or adapter that matches the test port.
Step 04
Connect 12V / 24V Power
Connect the detector to a 12V or 24V DC battery, then turn on the power switch.
Step 05
Select the Mode
Choose Standard Mode or EVAP Mode for the required pressure range. Then use Air Mode for pressure and airflow checks or Smoke Mode for visual leak location.
Step 06
Locate Leaks
Monitor smoke, pressure, and airflow during the test. Use a headlamp if needed to see small points where smoke escapes.
Pressure-mode selection, 12V/24V power, airflow, testing oil, heat, and system limits
Safety & Compatibility
SDT208 has two pressure modes. Use EVAP Mode for EVAP-focused tests below 10 psi, and use Standard Mode up to 35 psi only when the vehicle or component service procedure allows that pressure range. Choose the pressure mode before starting the test.
12V / 24V Power and Built-In Air Pump
Connect SDT208 to a 12V or 24V DC battery before use. The built-in air pump provides the test airflow, so you do not need an external compressor.
Choose the Pressure Mode Before Testing
Use EVAP Mode for EVAP-focused testing below 10 psi. Standard Mode is available up to 35 psi, but select it only when the vehicle or component service procedure permits that pressure range.
Start with Air Mode, Then Switch to Smoke
Use Air Mode to watch pressure and airflow, then switch to Smoke Mode when you are ready to locate the leak visually. Adjust airflow only within the selected pressure mode; changing flow does not remove that mode’s pressure limit.
Use the Oil-Level Gauge, but Keep the 10–15 mL Fill Limit
Testing oil is not included. Use liquid paraffin or baby oil, add 10–15 mL before use, and use the oil-level gauge to check the current oil volume without overfilling.
Drain Old Oil Before Refilling
Add fresh oil only when the smoke output becomes thin. Drain the remaining oil before refilling, and do not add more than 15 mL at one time.
Limit Continuous Use to 8 Minutes
Do not run SDT208 continuously for more than 8 minutes. Automatic overheat protection shuts the unit down above 75°C. Let the unit cool before restarting.
Operating Temperature and Hot Surfaces
SDT208 supports operation down to -20°C. The round metal housing can become hot during use, so avoid touching hot surfaces directly.
Do Not Use for Direct High-Pressure A/C Testing
Standard Mode can reach up to 35 psi, but SDT208 still cannot directly pressure-test an automotive A/C high-pressure system. If a service procedure permits smoke on an isolated A/C line section, use smoke only as an indirect visual aid.
Match the Adapter and Test Procedure to the System
Use the correct adapter and pressure mode for the selected system. Follow the vehicle or component service procedure, and do not introduce smoke or pressure where the procedure does not permit it.
Compare AUTOOL smoke leak detector models
Compare Smoke Leak Detector Models
Compare AUTOOL smoke leak detector models by air source, pressure, output flow, operating mode, gauges, flow control, oil handling, vehicle power compatibility, and other model-specific features.
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| Specification | Model 1AUTOOL SDT203 | Model 2AUTOOL SDT50 | Model 3AUTOOL SDT60 | Model 4AUTOOL SDT100 | Model 5AUTOOL SDT101 | Model 6AUTOOL SDT102 | Model 7AUTOOL SDT103 | Model 8AUTOOL SDT106 | Model 9AUTOOL SDT205 | Model 10AUTOOL SDT205S | Model 11AUTOOL SDT206 | Model 1AUTOOL SDT208 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Core Output and Power | ||||||||||||
| How It Works | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion |
| Input Power | 12V DC | 12V DC | 12V DC | 12V DC | 12V DC / 5A | 12V DC | 12V DC / 5A | 12V DC | 12V DC | 12V DC | 12V DC | 12V / 24V DC |
| Testing Oil Fill Volume | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL |
| Rated Output Pressure | <15 psi | <10 psi | <10 psi | <10 psi | 3.2 kPa (0.46 psi) | <10 psi | 3.2 kPa (0.46 psi) | <12 psi | <15 psi | <15 psi | <18 psi | <10 psi EVAP / 35 psi Standard |
| Rated Output Flow | <6 L/min | <5 L/min | <5 L/min | <5 L/min | >10 L/min | >6 L/min | >10 L/min | <5 L/min | <6 L/min | <6 L/min | <6 L/min | <15 L/min |
| Rated Power | 65 W | 50 W | 50 W | 50 W | 48 W | 48 W | 48 W | 50 W | 65 W | 65 W | 70 W | 80 W |
| High-Temperature Protection | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C |
| Response Time | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds |
| Monitoring and Control | ||||||||||||
| Flow Meter Window | Included | Not included | Not included | Not included | Not included | Not included | Included | Not included | Not included | Included | Included | Included |
| Pressure Gauge | Included | Not included | Included | Not included | Not included | Included | Not included | Not included | Included | Included | Included | Included |
| Flow Adjustment Knob | Included | Not included | Not included | Not included | Not included | Not included | Included | Not included | Not included | Included | Included | Included |
| Fault Indicator Light | Included | Not included | Not included | Included | Not included | Included | Not included | Not included | Included | Included | Included | Included |
| Oil Level Gauge | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Included | Included |
| Air Source and Operating Modes | ||||||||||||
| Air Source Type | Built-in Air Pump | Built-in Air Pump | Built-in Air Pump | Built-in Air Pump | External Air Source | Built-in Air Pump | External Air Source | Built-in Air Pump | Built-in Air Pump | Built-in Air Pump | Dual Built-In Air Pumps | Built-in Air Pump |
| Operating Modes | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Air Mode / Smoke Mode | Air Mode / Smoke Mode | Air Mode / Smoke Mode | Air Mode / Smoke Mode |
| Dual Pressure Mode | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Standard Mode (35 psi) / EVAP Mode (10 psi) |
| Oil Drain Valve | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Included | Included | Included | Included |
| Size and Weight | ||||||||||||
| Net Weight (Main Unit) | 1.7 kg | 1.5 kg | 1.6 kg | 1.6 kg | 1.6 kg | 1.6 kg | 1.15 kg | 3.5 kg | 3.2 kg | 3.2 kg | 3.5 kg | 4.2 kg |
| Main Unit Dimensions | 145 × 80 × 200 mm | 145 × 80 × 200 mm | 145 × 80 × 200 mm | 180 × 102 × 143 mm | 180 × 100 × 135 mm | 180 × 102 × 143 mm | 180 × 100 × 135 mm | 110 × 135 × 210 mm | 295 × 295 × 207 mm | 295 × 295 × 207 mm | 150 × 150 × 275 mm | 350 × 250 × 300 mm |
Model Guide
Use this overview to identify the smoke leak detector models you want to compare in detail.
AUTOOL SDT203
Built-in air pump · <15 psi rated output pressure · <6 L/min rated output flow · Smoke Mode
AUTOOL SDT50
Built-in air pump · <10 psi rated output pressure · <5 L/min rated output flow · Smoke Mode
AUTOOL SDT60
Built-in air pump · <10 psi rated output pressure · <5 L/min rated output flow · Smoke Mode
AUTOOL SDT100
Built-in air pump · <10 psi rated output pressure · <5 L/min rated output flow · Smoke Mode
AUTOOL SDT101
External air source · 3.2 kPa (0.46 psi) rated output pressure · >10 L/min rated output flow · Smoke Mode
AUTOOL SDT102
Built-in air pump · <10 psi rated output pressure · >6 L/min rated output flow · Smoke Mode
AUTOOL SDT103
External air source · 3.2 kPa (0.46 psi) rated output pressure · >10 L/min rated output flow · Smoke Mode
AUTOOL SDT106
Built-in air pump · <12 psi rated output pressure · <5 L/min rated output flow · Smoke Mode
AUTOOL SDT205
Built-in air pump · <15 psi rated output pressure · <6 L/min rated output flow · Air Mode / Smoke Mode
AUTOOL SDT205S
Built-in air pump · <15 psi rated output pressure · <6 L/min rated output flow · Air Mode / Smoke Mode
AUTOOL SDT206
Two built-in air pumps · <18 psi rated output pressure · <6 L/min rated output flow · Air Mode / Smoke Mode
AUTOOL SDT208
Built-in air pump · <10 psi EVAP / 35 psi Standard rated output pressure · <15 L/min rated output flow · Air Mode / Smoke Mode
What’s in the Box
Package Contents
The package includes the SDT208 main unit and the accessories shown below. The oil bottle is included empty; testing oil is not included.
- Main UnitAUTOOL SDT208 smoke leak detector
- Power Cable12V / 24V battery power cable
- Smoke HoseSmoke output hose for leak testing
- AdaptersCone adapter, rubber caps, adapter set, and accessories
- Oil BottleEmpty oil bottle included; testing oil is not included
- DocumentationUser manual, warranty information, certificate, and retail box
Manual, warranty, and setup support
Manual and Downloads
Use the manual below for SDT208 setup, pressure-mode selection, operation, maintenance, and safety guidance.
AUTOOL SDT208 User Manual
Open the PDF manual for SDT208 setup, operation, oil filling, mode use, and safety guidance.
Frequently asked questions
Frequently Asked Questions
What Testing Oil Should I Use for SDT208?
Testing oil is not included. If dedicated smoke-testing oil is unavailable, use liquid paraffin or baby oil.
How Much Testing Oil Should I Add?
Add 10–15 mL testing oil before use. Do not add more than 15 mL each time. Refill only when the smoke becomes thin, and drain the remaining testing oil before adding fresh oil. If too much oil is added accidentally, drain some oil out before operation.
What Power Supply Does SDT208 Need?
SDT208 requires a 12V or 24V DC battery. Connect the detector to the battery correctly before turning on the unit.
Can SDT208 Detect EVAP Leaks?
Yes. SDT208 can be used for EVAP leak checks. Use EVAP Mode with the EVAP adapter or service tool that matches the vehicle test port.
What Is the Difference Between Standard Mode and EVAP Mode?
Standard Mode supports testing up to 35 psi. Use it only for systems whose service procedure allows that pressure range. EVAP Mode is limited below 10 psi to help protect EVAP lines during testing. Always select the mode according to the system being tested.
Can SDT208 Directly Test Automotive A/C System Leaks?
No. The automotive A/C system operates at about 1.7–3.0 MPa output pressure, while smoke leak detectors generate much lower pressure. SDT208 cannot directly pressure-test the automotive A/C system for leaks. Use smoke only to help inspect an A/C line section after isolating and pressurizing it according to the service procedure.
How Can Smoke Help Locate a Leak in an Isolated A/C Line Section?
First isolate and pressurize the A/C line segment according to the vehicle or A/C service procedure. Then apply smoke near the test section and observe whether escaping airflow disturbs the smoke. If escaping air moves the smoke, inspect that area for a possible leak.
What Systems Can SDT208 Test?
SDT208 supports low-pressure leak checks on EVAP, intake, exhaust, crankcase, fuel-tank, vacuum-line, vehicle-sealing, and line-fitting systems. For selected turbo or intercooler paths, SDT208 can also be used as a turbo smoke tester. Standard Mode is available up to 35 psi, but use it only when the vehicle or component service procedure allows that pressure range.
How Do I Read the Pressure Gauge and Flow Meter?
Use the pressure gauge and flow meter to monitor pressure and airflow during the test. In general, if the pressure gauge continues to rise and stabilize, the test line may have no obvious leak. If the pressure continues to decrease, the line may have a leak that needs further inspection and repair.
Can I Adjust the Pressure on SDT208?
SDT208 provides Standard Mode and EVAP Mode, plus airflow adjustment through the regulator. It is not designed as an unrestricted high-pressure tester. Use the pressure mode specified for the selected system, and do not apply smoke pressure where the vehicle or component service procedure excludes smoke testing.
What Accessories Are Included?
Check the product listing or your selected package option for the exact items included. The package includes the main unit, power cable, smoke hose, adapters, rubber caps, oil bottle, manual, warranty information, certificate, retail box, and other listed accessories. Testing oil is not included.
What Should I Check If the Smoke Becomes Thin or No Smoke Appears?
First check that the detector contains 10–15 mL of testing oil. Confirm that the power supply is connected, the airflow regulator is open, and the correct switch and mode are selected. If smoke becomes thin, drain the remaining oil and add fresh testing oil. If the detector has overheated, let it cool before restarting. Contact support if the issue remains.
How Do AUTOOL Smoke Leak Detector Models Differ?
SDT101 and SDT103 use external air sources at 3.2 kPa (0.46 psi) EVAP pressure. SDT106 uses a built-in pump with rated output below 12 psi. SDT203, SDT205, and SDT205S use built-in pumps with rated output below 15 psi. SDT206 uses two built-in air pumps with rated output below 18 psi. SDT208 provides a 35 psi Standard mode and a 10 psi EVAP mode. Compare power supply, air source, pressure, flow monitoring, oil drainage, and included accessories to choose the model that fits your work.
How Long Is the Warranty?
The SDT208 main unit has a 3-year limited warranty, and standard accessories have a 1-year limited warranty. See the Warranty Policy for coverage and exclusions. Contact support for setup, accessory, or troubleshooting help.
Customer Reviews
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Derby ✓ Verified Purchase –
Het werkt goed, hoewel het niet brengen olie, gewoon een container waar te meten…
Het werkt goed, hoewel het niet brengen olie, gewoon een container waar te meten of winkel het. IK binnen de verwachte, maar niet extrarapid ofwel.
Barry ✓ Verified Purchase –
super machine !!!
super machine !!!
Tharsos ✓ Verified Purchase –
Very good smoke machine, very powerful, worth buying
Very good smoke machine, very powerful, worth buying