AUTOOL SDT50Product OverviewAUTOOL SDT50 is a lightweight and portable automotive smoke tester with a built-in air pump, designed for detecting leaks in intake systems, exhaust systems, fuel tank systems, car sealing areas, and various pipe fittings. It does not require a separate air supply, making it convenient for mobile diagnosis, DIY inspection, and basic workshop leak detection.Built-In Air Pump DC 12V Battery 10-15ml Test Oil 1.5kg Portable<10psiOutput Pressure<5L/minOutput Flow50WRated Power3 YearsWarranty Click to enlargeKey FeaturesKey FeaturesSDT50 focuses on portable 12V smoke leak detection with built-in air pump, quick smoke output, thermal protection, wide leak coverage, and broad 12V vehicle compatibility.Built-In Air PumpNo need to connect an external air supply. The built-in pump makes SDT50 convenient for quick testing at different locations without purchasing an extra air pump.Quick Smoke OutputPress the smoke switch to generate a large amount of smoke quickly, helping users locate automotive leak points faster.Lightweight And PortableThe SDT50 smoke machine leak detector weighs only 1.5kg, does not take up much storage space, and is easy to carry for mobile diagnosis.High / Low Temperature ProtectionThe machine intelligently powers off when the temperature reaches 75°C, and it can still work when the temperature reaches -20°C.Wide Leak Detection CoverageSuitable for checking crankcase, oil seal, intercooler air, throttle valve, intake manifold, exhaust pipe, fuel tank, pipe fittings, coolant tank, and related leak points.Wide Vehicle CoverageSuitable for cars, motorcycles, trucks, snowmobiles, off-road vehicles, speedboats, and other vehicles that use 12V DC power. Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlargeHow To UseHow To UseUse the SDT50 with a DC 12V battery, liquid paraffin or baby oil, and the included smoke hose. Before use, gently turn the knob to open the airflow regulator valve.Add Test OilFill 10-15ml baby oil or liquid paraffin into the detector before first use. Do not exceed this range.Connect The Test PipeOpen the engine cover, hang the detector if needed, and disconnect the pipe that needs to be connected to the detector.Power OnConnect the detector to a DC 12V battery, gently open the airflow regulator valve, then turn on the power switch.Locate LeaksIn about 30 seconds, the pipe will be filled with smoke. Check the leak points visually and use a headlamp if necessary.Use NotesLiquid paraffin and baby oil are both acceptable testing liquids.Add fresh oil only when the smoke becomes thin.Do not add more than 15ml oil each time.Before filling fresh oil, pour out the remaining oil in the detector and replace detector oil regularly.During leak detection, keep away from smoke-sensitive parts.Do not run the detector continuously for more than 8 minutes.If the machine shuts off due to 75°C protection, let it rest before reuse.The round metal part may become hot; avoid burns. Click to enlargeSpecificationsAUTOOL SDT50 SpecificationsReview SDT50 power, pressure, flow, weight, size, and testing oil requirements before ordering.Core SpecificationsProductAUTOOL SDT50 Smoke Leak DetectorWorking TheoryLow oxygen combustionPower SupplyDC 12V batteryAir Pressure OutputBuilt-in air pumpRated Output Pressure<10psiRated Output Flow<5L/minRated Power50WProduct Weight1.5kgGross Weight2.5kgProduct Size145 × 80 × 200mm / 5.7 × 3.14 × 7.87inTest Oil Filling Volume10-15ml; do not exceed 15ml each time Click to enlarge SDT50 SpecsWorking TheoryLow oxygen combustionPower SupplyDC 12V batteryAir Pressure OutputBuilt-in air pumpRated Output Pressure<10psiRated Output Flow<5L/minRated Power50WProduct Weight1.5kgGross Weight2.5kgProduct Size145 × 80 × 200mm / 5.7 × 3.14 × 7.87inTest Oil10-15ml; do not exceed 15ml each time Click to enlargeWhat Is In The BoxWhat Is In The BoxThe SDT50 package image shows the main detector, product box, hose, power clamp cable, filling accessories, hanging hook, and user manual. Packing List uses only the most relevant package image for clarity.Main UnitAUTOOL SDT50 Smoke Leak DetectorPower Cable12V battery clamp cableSmoke HoseSmoke output hoseFilling AccessoriesFunnel and filling bottle shown in the package imageHookHanging hookDocumentationUser manualTesting LiquidUse liquid paraffin or baby oil locally if neededProduct ComparisonProduct ComparisonUse the comparison chart to understand where SDT50 sits in the AUTOOL smoke leak detector lineup and whether another model better matches EVAP, pressure gauge, air mode, smoke mode, or workshop needs.SDT50 FocusLightweight entry model with built-in air pump, smoke mode, <10psi pressure, <5L/min output flow, 50W rated power, and 1.5kg main-unit weightSDT60Adds pressure gauge support while keeping a compact built-in-pump setupSDT101 / SDT103EVAP-focused external-air-source models for users with an air compressorSDT205 / SDT205S / SDT206 / SDT208Support air mode smoke mode for more flexible workshop diagnosticsSDT208Supports high pressure mode 35psi and low pressure mode 10psi Click to enlargeManual And DownloadsManual And DownloadsDownload the AUTOOL SDT50 user manual for setup, test oil filling, 12V power connection, smoke testing, and safe-use instructions. Click to enlargeAUTOOL SDT50 User ManualOpen the PDF manual for SDT50 setup, oil filling, power connection, smoke output, and safe-use guidance. Download ManualNeed SDT50 Setup Help?Contact AUTOOL support if you need help confirming test oil, 12V battery connection, airflow regulator valve operation, overheating protection, or SDT model selection.Email[email protected] WhatsApp 86 189 2647 7404Before You Order And UseBefore You Order And UseSDT50 requires a 12V battery and proper test oil control. Review these operating notes before using the smoke detector.Power And OilSDT50 must be connected to a 12V battery.Fill 10-15ml oil before first use. Do not exceed this range.Liquid paraffin and baby oil are both acceptable testing liquids.Fresh oil can be added only when smoke becomes thin.Do not add more than 15ml oil each time.Before filling fresh oil, pour out the remaining oil in the detector and replace detector oil regularly.Operation And ProtectionBefore use, gently turn the knob to open the airflow regulator valve.During leak detection, keep away from smoke-sensitive parts.Do not run the detector continuously for more than 8 minutes.If the detector exceeds the working limit, such as over 75°C, it will automatically turn off power.If the machine powers off due to protection, operate it later after cooling.The round part of the detector may become hot; avoid burns.Related ProductsRelated ProductsCompare related AUTOOL smoke leak detector models before choosing the right pump setup, EVAP support, air / smoke mode, pressure range, and workshop function.Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAutomotive Smoke Leak Detector for EVAP Smoke Tests SDT60Rated 0 out of 5(0) From US$95.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAuto Smoke Leak Detector For EVAP System-AUTOOL SDT101Rated 0 out of 5(0) From US$80.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAutomotive Smoke Tester for EVAP System 12V- AUTOOL SDT103Rated 0 out of 5(0) From US$90.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAUTOOL SDT106 Auto EVAP Leakage Smoke Test MachineRated 0 out of 5(0) From US$129.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAUTOOL SDT203 EVAP Smoke Machine Vacuum Smoke TesterRated 0 out of 5(0) From US$159.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAUTOOL SDT205 Automotive Smoke Machine Leak DetectorRated 0 out of 5(0) From US$199.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAUTOOL SDT205S Smoke Leak DetectorRated 0 out of 5(0) From US$249.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAUTOOL SDT206 Smoke Machine For Vacuum LeaksRated 0 out of 5(0) From US$299.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Smoke Leak DetectorAUTOOL SDT208 Smoke for Leak DetectionRated 0 out of 5(0) From US$429.00 Select options This product has multiple variants. The options may be chosen on the product page Questions And AnswersThese answers cover external air supply, test oil type, oil amount, 12V power, continuous operation, overheating protection, hot surface warning, smoke-sensitive parts, and model selection.Does SDT50 Need An External Air Pump? No. AUTOOL SDT50 has a built-in air pump, so it does not require a separate air supply or extra air pump for normal smoke leak detection.What Testing Liquid Should I Use? Liquid paraffin and baby oil are both acceptable testing liquids for SDT50. Replace detector oil regularly and pour out remaining oil before filling fresh oil.How Much Oil Should I Add? Fill 10-15ml oil before first use. Do not exceed this range. Fresh oil can be added only when smoke becomes thin, and do not add more than 15ml each time.What Power Supply Does SDT50 Need? SDT50 must be connected to a DC 12V battery. It is suitable for 12V DC vehicle leak detection scenarios.How Long Can SDT50 Run Continuously? Do not run the detector continuously for more than 8 minutes. It needs interval rest to protect the machine and maintain reliable smoke output.Why Did The Machine Shut Off Automatically? The detector has an intelligent protector. If it exceeds the working limit, such as over 75°C, it will automatically turn off power. Let the machine cool down and operate it later.Is Any Part Of The Detector Hot During Operation? Yes. The round part of the detector may have temperature during operation. Be careful and avoid burns.Should I Avoid Any Parts During Leak Detection? Yes. During the leak detection process, keep away from smoke-sensitive parts to avoid unnecessary contamination or sensitivity issues.What Is The Difference Between SDT50 And Other AUTOOL Smoke Detectors? SDT50 is the lightweight entry model with built-in air pump, smoke mode, <10psi pressure, <5L/min output flow, 50W rated power, and 1.5kg main-unit weight. SDT60 adds pressure gauge support, SDT101 / SDT103 are EVAP-focused external-air-source models, SDT205 / SDT205S / SDT206 / SDT208 support air mode smoke mode, and SDT208 supports 35psi high pressure and 10psi low pressure modes.Warranty And ContactWarranty And ContactFor SDT50 test oil, 12V power connection, airflow regulator valve use, overheating protection, hot surface warning, accessory confirmation, manual support, or SDT model selection, contact AUTOOL Store directly.Pre-Sales And Product SupportUse support if you need help confirming SDT50 setup, testing liquid, 10-15ml oil filling, 8-minute operation limit, 75°C protection, package contents, or whether another AUTOOL smoke detector model better fits EVAP or air / smoke dual-mode diagnostics.3-year warranty for eligible non-human damage casesTest oil and 12V power setup confirmationAirflow regulator valve and smoke output guidanceOverheating protection and hot-surface safety supportPackage accessory and manual supportSDT50 / SDT60 / SDT101 / SDT103 / SDT205 / SDT206 / SDT208 model selectionEmail Support[email protected] WhatsApp Support 86 189 2647 7404